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diff --git a/build-tools/lib/less/LICENSE b/build-tools/lib/less/LICENSE
deleted file mode 100644
index 40f3b781..00000000
--- a/build-tools/lib/less/LICENSE
+++ /dev/null
@@ -1,179 +0,0 @@
-
-                              Apache License
-                        Version 2.0, January 2004
-                     http://www.apache.org/licenses/
-
-TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-1. Definitions.
-
-   "License" shall mean the terms and conditions for use, reproduction,
-   and distribution as defined by Sections 1 through 9 of this document.
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-   direction or management of such entity, whether by contract or
-   otherwise, or (ii) ownership of fifty percent (50%) or more of the
-   outstanding shares, or (iii) beneficial ownership of such entity.
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-   "You" (or "Your") shall mean an individual or Legal Entity
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-   including but not limited to software source code, documentation
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-   reproduction, and distribution of the Work otherwise complies with
-   the conditions stated in this License.
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-5. Submission of Contributions. Unless You explicitly state otherwise,
-   any Contribution intentionally submitted for inclusion in the Work
-   by You to the Licensor shall be under the terms and conditions of
-   this License, without any additional terms or conditions.
-   Notwithstanding the above, nothing herein shall supersede or modify
-   the terms of any separate license agreement you may have executed
-   with Licensor regarding such Contributions.
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-6. Trademarks. This License does not grant permission to use the trade
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-   except as required for reasonable and customary use in describing the
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-END OF TERMS AND CONDITIONS
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-Copyright (c) 2009-2010 Alexis Sellier
diff --git a/build-tools/lib/less/browser.js b/build-tools/lib/less/browser.js
deleted file mode 100644
index cba4c3b6..00000000
--- a/build-tools/lib/less/browser.js
+++ /dev/null
@@ -1,375 +0,0 @@
-//
-// browser.js - client-side engine
-//
-
-var isFileProtocol = (location.protocol === 'file:'    ||
-                      location.protocol === 'chrome:'  ||
-                      location.protocol === 'chrome-extension:'  ||
-                      location.protocol === 'resource:');
-
-less.env = less.env || (location.hostname == '127.0.0.1' ||
-                        location.hostname == '0.0.0.0'   ||
-                        location.hostname == 'localhost' ||
-                        location.port.length > 0         ||
-                        isFileProtocol                   ? 'development'
-                                                         : 'production');
-
-// Load styles asynchronously (default: false)
-//
-// This is set to `false` by default, so that the body
-// doesn't start loading before the stylesheets are parsed.
-// Setting this to `true` can result in flickering.
-//
-less.async = false;
-
-// Interval between watch polls
-less.poll = less.poll || (isFileProtocol ? 1000 : 1500);
-
-//
-// Watch mode
-//
-less.watch   = function () { return this.watchMode = true };
-less.unwatch = function () { return this.watchMode = false };
-
-if (less.env === 'development') {
-    less.optimization = 0;
-
-    if (/!watch/.test(location.hash)) {
-        less.watch();
-    }
-    less.watchTimer = setInterval(function () {
-        if (less.watchMode) {
-            loadStyleSheets(function (root, sheet, env) {
-                if (root) {
-                    createCSS(root.toCSS(), sheet, env.lastModified);
-                }
-            });
-        }
-    }, less.poll);
-} else {
-    less.optimization = 3;
-}
-
-var cache;
-
-try {
-    cache = (typeof(window.localStorage) === 'undefined') ? null : window.localStorage;
-} catch (_) {
-    cache = null;
-}
-
-//
-// Get all <link> tags with the 'rel' attribute set to "stylesheet/less"
-//
-var links = document.getElementsByTagName('link');
-var typePattern = /^text\/(x-)?less$/;
-
-less.sheets = [];
-
-for (var i = 0; i < links.length; i++) {
-    if (links[i].rel === 'stylesheet/less' || (links[i].rel.match(/stylesheet/) &&
-       (links[i].type.match(typePattern)))) {
-        less.sheets.push(links[i]);
-    }
-}
-
-
-less.refresh = function (reload) {
-    var startTime, endTime;
-    startTime = endTime = new(Date);
-
-    loadStyleSheets(function (root, sheet, env) {
-        if (env.local) {
-            log("loading " + sheet.href + " from cache.");
-        } else {
-            log("parsed " + sheet.href + " successfully.");
-            createCSS(root.toCSS(), sheet, env.lastModified);
-        }
-        log("css for " + sheet.href + " generated in " + (new(Date) - endTime) + 'ms');
-        (env.remaining === 0) && log("css generated in " + (new(Date) - startTime) + 'ms');
-        endTime = new(Date);
-    }, reload);
-
-    loadStyles();
-};
-less.refreshStyles = loadStyles;
-
-less.refresh(less.env === 'development');
-
-function loadStyles() {
-    var styles = document.getElementsByTagName('style');
-    for (var i = 0; i < styles.length; i++) {
-        if (styles[i].type.match(typePattern)) {
-            new(less.Parser)().parse(styles[i].innerHTML || '', function (e, tree) {
-                var css = tree.toCSS();
-                var style = styles[i];
-                try {
-                    style.innerHTML = css;
-                } catch (_) {
-                    style.styleSheets.cssText = css;
-                }
-                style.type = 'text/css';
-            });
-        }
-    }
-}
-
-function loadStyleSheets(callback, reload) {
-    for (var i = 0; i < less.sheets.length; i++) {
-        loadStyleSheet(less.sheets[i], callback, reload, less.sheets.length - (i + 1));
-    }
-}
-
-function loadStyleSheet(sheet, callback, reload, remaining) {
-    var url       = window.location.href.replace(/[#?].*$/, '');
-    var href      = sheet.href.replace(/\?.*$/, '');
-    var css       = cache && cache.getItem(href);
-    var timestamp = cache && cache.getItem(href + ':timestamp');
-    var styles    = { css: css, timestamp: timestamp };
-
-    // Stylesheets in IE don't always return the full path
-    if (! /^(https?|file):/.test(href)) {
-        if (href.charAt(0) == "/") {
-            href = window.location.protocol + "//" + window.location.host + href;
-        } else {
-            href = url.slice(0, url.lastIndexOf('/') + 1) + href;
-        }
-    }
-
-    xhr(sheet.href, sheet.type, function (data, lastModified) {
-        if (!reload && styles && lastModified &&
-           (new(Date)(lastModified).valueOf() ===
-            new(Date)(styles.timestamp).valueOf())) {
-            // Use local copy
-            createCSS(styles.css, sheet);
-            callback(null, sheet, { local: true, remaining: remaining });
-        } else {
-            // Use remote copy (re-parse)
-            try {
-                new(less.Parser)({
-                    optimization: less.optimization,
-                    paths: [href.replace(/[\w\.-]+$/, '')],
-                    mime: sheet.type
-                }).parse(data, function (e, root) {
-                    if (e) { return error(e, href) }
-                    try {
-                        callback(root, sheet, { local: false, lastModified: lastModified, remaining: remaining });
-                        removeNode(document.getElementById('less-error-message:' + extractId(href)));
-                    } catch (e) {
-                        error(e, href);
-                    }
-                });
-            } catch (e) {
-                error(e, href);
-            }
-        }
-    }, function (status, url) {
-        throw new(Error)("Couldn't load " + url + " (" + status + ")");
-    });
-}
-
-function extractId(href) {
-    return href.replace(/^[a-z]+:\/\/?[^\/]+/, '' )  // Remove protocol & domain
-               .replace(/^\//,                 '' )  // Remove root /
-               .replace(/\?.*$/,               '' )  // Remove query
-               .replace(/\.[^\.\/]+$/,         '' )  // Remove file extension
-               .replace(/[^\.\w-]+/g,          '-')  // Replace illegal characters
-               .replace(/\./g,                 ':'); // Replace dots with colons(for valid id)
-}
-
-function createCSS(styles, sheet, lastModified) {
-    var css;
-
-    // Strip the query-string
-    var href = sheet.href ? sheet.href.replace(/\?.*$/, '') : '';
-
-    // If there is no title set, use the filename, minus the extension
-    var id = 'less:' + (sheet.title || extractId(href));
-
-    // If the stylesheet doesn't exist, create a new node
-    if ((css = document.getElementById(id)) === null) {
-        css = document.createElement('style');
-        css.type = 'text/css';
-        css.media = sheet.media || 'screen';
-        css.id = id;
-        document.getElementsByTagName('head')[0].appendChild(css);
-    }
-
-    if (css.styleSheet) { // IE
-        try {
-            css.styleSheet.cssText = styles;
-        } catch (e) {
-            throw new(Error)("Couldn't reassign styleSheet.cssText.");
-        }
-    } else {
-        (function (node) {
-            if (css.childNodes.length > 0) {
-                if (css.firstChild.nodeValue !== node.nodeValue) {
-                    css.replaceChild(node, css.firstChild);
-                }
-            } else {
-                css.appendChild(node);
-            }
-        })(document.createTextNode(styles));
-    }
-
-    // Don't update the local store if the file wasn't modified
-    if (lastModified && cache) {
-        log('saving ' + href + ' to cache.');
-        cache.setItem(href, styles);
-        cache.setItem(href + ':timestamp', lastModified);
-    }
-}
-
-function xhr(url, type, callback, errback) {
-    var xhr = getXMLHttpRequest();
-    var async = isFileProtocol ? false : less.async;
-
-    if (typeof(xhr.overrideMimeType) === 'function') {
-        xhr.overrideMimeType('text/css');
-    }
-    xhr.open('GET', url, async);
-    xhr.setRequestHeader('Accept', type || 'text/x-less, text/css; q=0.9, */*; q=0.5');
-    xhr.send(null);
-
-    if (isFileProtocol) {
-        if (xhr.status === 0) {
-            callback(xhr.responseText);
-        } else {
-            errback(xhr.status, url);
-        }
-    } else if (async) {
-        xhr.onreadystatechange = function () {
-            if (xhr.readyState == 4) {
-                handleResponse(xhr, callback, errback);
-            }
-        };
-    } else {
-        handleResponse(xhr, callback, errback);
-    }
-
-    function handleResponse(xhr, callback, errback) {
-        if (xhr.status >= 200 && xhr.status < 300) {
-            callback(xhr.responseText,
-                     xhr.getResponseHeader("Last-Modified"));
-        } else if (typeof(errback) === 'function') {
-            errback(xhr.status, url);
-        }
-    }
-}
-
-function getXMLHttpRequest() {
-    if (window.XMLHttpRequest) {
-        return new(XMLHttpRequest);
-    } else {
-        try {
-            return new(ActiveXObject)("MSXML2.XMLHTTP.3.0");
-        } catch (e) {
-            log("browser doesn't support AJAX.");
-            return null;
-        }
-    }
-}
-
-function removeNode(node) {
-    return node && node.parentNode.removeChild(node);
-}
-
-function log(str) {
-    if (less.env == 'development' && typeof(console) !== "undefined") { console.log('less: ' + str) }
-}
-
-function error(e, href) {
-    var id = 'less-error-message:' + extractId(href);
-
-    var template = ['<ul>',
-                        '<li><label>[-1]</label><pre class="ctx">{0}</pre></li>',
-                        '<li><label>[0]</label><pre>{current}</pre></li>',
-                        '<li><label>[1]</label><pre class="ctx">{2}</pre></li>',
-                    '</ul>'].join('\n');
-
-    var elem = document.createElement('div'), timer, content;
-
-    elem.id        = id;
-    elem.className = "less-error-message";
-
-    content = '<h3>'  + (e.message || 'There is an error in your .less file') +
-              '</h3>' + '<p><a href="' + href   + '">' + href + "</a> ";
-
-    if (e.extract) {
-        content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':</p>' +
-            template.replace(/\[(-?\d)\]/g, function (_, i) {
-                return (parseInt(e.line) + parseInt(i)) || '';
-            }).replace(/\{(\d)\}/g, function (_, i) {
-                return e.extract[parseInt(i)] || '';
-            }).replace(/\{current\}/, e.extract[1].slice(0, e.column) + '<span class="error">' +
-                                      e.extract[1].slice(e.column)    + '</span>');
-    }
-    elem.innerHTML = content;
-
-    // CSS for error messages
-    createCSS([
-        '.less-error-message ul, .less-error-message li {',
-            'list-style-type: none;',
-            'margin-right: 15px;',
-            'padding: 4px 0;',
-            'margin: 0;',
-        '}',
-        '.less-error-message label {',
-            'font-size: 12px;',
-            'margin-right: 15px;',
-            'padding: 4px 0;',
-            'color: #cc7777;',
-        '}',
-        '.less-error-message pre {',
-            'color: #ee4444;',
-            'padding: 4px 0;',
-            'margin: 0;',
-            'display: inline-block;',
-        '}',
-        '.less-error-message pre.ctx {',
-            'color: #dd4444;',
-        '}',
-        '.less-error-message h3 {',
-            'font-size: 20px;',
-            'font-weight: bold;',
-            'padding: 15px 0 5px 0;',
-            'margin: 0;',
-        '}',
-        '.less-error-message a {',
-            'color: #10a',
-        '}',
-        '.less-error-message .error {',
-            'color: red;',
-            'font-weight: bold;',
-            'padding-bottom: 2px;',
-            'border-bottom: 1px dashed red;',
-        '}'
-    ].join('\n'), { title: 'error-message' });
-
-    elem.style.cssText = [
-        "font-family: Arial, sans-serif",
-        "border: 1px solid #e00",
-        "background-color: #eee",
-        "border-radius: 5px",
-        "-webkit-border-radius: 5px",
-        "-moz-border-radius: 5px",
-        "color: #e00",
-        "padding: 15px",
-        "margin-bottom: 15px"
-    ].join(';');
-
-    if (less.env == 'development') {
-        timer = setInterval(function () {
-            if (document.body) {
-                if (document.getElementById(id)) {
-                    document.body.replaceChild(elem, document.getElementById(id));
-                } else {
-                    document.body.insertBefore(elem, document.body.firstChild);
-                }
-                clearInterval(timer);
-            }
-        }, 10);
-    }
-}
-
diff --git a/build-tools/lib/less/functions.js b/build-tools/lib/less/functions.js
deleted file mode 100644
index fc9d86f1..00000000
--- a/build-tools/lib/less/functions.js
+++ /dev/null
@@ -1,185 +0,0 @@
-(function (tree) {
-
-tree.functions = {
-    rgb: function (r, g, b) {
-        return this.rgba(r, g, b, 1.0);
-    },
-    rgba: function (r, g, b, a) {
-        var rgb = [r, g, b].map(function (c) { return number(c) }),
-            a = number(a);
-        return new(tree.Color)(rgb, a);
-    },
-    hsl: function (h, s, l) {
-        return this.hsla(h, s, l, 1.0);
-    },
-    hsla: function (h, s, l, a) {
-        h = (number(h) % 360) / 360;
-        s = number(s); l = number(l); a = number(a);
-
-        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
-        var m1 = l * 2 - m2;
-
-        return this.rgba(hue(h + 1/3) * 255,
-                         hue(h)       * 255,
-                         hue(h - 1/3) * 255,
-                         a);
-
-        function hue(h) {
-            h = h < 0 ? h + 1 : (h > 1 ? h - 1 : h);
-            if      (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
-            else if (h * 2 < 1) return m2;
-            else if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
-            else                return m1;
-        }
-    },
-    hue: function (color) {
-        return new(tree.Dimension)(Math.round(color.toHSL().h));
-    },
-    saturation: function (color) {
-        return new(tree.Dimension)(Math.round(color.toHSL().s * 100), '%');
-    },
-    lightness: function (color) {
-        return new(tree.Dimension)(Math.round(color.toHSL().l * 100), '%');
-    },
-    alpha: function (color) {
-        return new(tree.Dimension)(color.toHSL().a);
-    },
-    saturate: function (color, amount) {
-        var hsl = color.toHSL();
-
-        hsl.s += amount.value / 100;
-        hsl.s = clamp(hsl.s);
-        return hsla(hsl);
-    },
-    desaturate: function (color, amount) {
-        var hsl = color.toHSL();
-
-        hsl.s -= amount.value / 100;
-        hsl.s = clamp(hsl.s);
-        return hsla(hsl);
-    },
-    lighten: function (color, amount) {
-        var hsl = color.toHSL();
-
-        hsl.l += amount.value / 100;
-        hsl.l = clamp(hsl.l);
-        return hsla(hsl);
-    },
-    darken: function (color, amount) {
-        var hsl = color.toHSL();
-
-        hsl.l -= amount.value / 100;
-        hsl.l = clamp(hsl.l);
-        return hsla(hsl);
-    },
-    fadein: function (color, amount) {
-        var hsl = color.toHSL();
-
-        hsl.a += amount.value / 100;
-        hsl.a = clamp(hsl.a);
-        return hsla(hsl);
-    },
-    fadeout: function (color, amount) {
-        var hsl = color.toHSL();
-
-        hsl.a -= amount.value / 100;
-        hsl.a = clamp(hsl.a);
-        return hsla(hsl);
-    },
-    fade: function (color, amount) {
-        var hsl = color.toHSL();
-
-        hsl.a = amount.value / 100;
-        hsl.a = clamp(hsl.a);
-        return hsla(hsl);
-    },
-    spin: function (color, amount) {
-        var hsl = color.toHSL();
-        var hue = (hsl.h + amount.value) % 360;
-
-        hsl.h = hue < 0 ? 360 + hue : hue;
-
-        return hsla(hsl);
-    },
-    //
-    // Copyright (c) 2006-2009 Hampton Catlin, Nathan Weizenbaum, and Chris Eppstein
-    // http://sass-lang.com
-    //
-    mix: function (color1, color2, weight) {
-        var p = weight.value / 100.0;
-        var w = p * 2 - 1;
-        var a = color1.toHSL().a - color2.toHSL().a;
-
-        var w1 = (((w * a == -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
-        var w2 = 1 - w1;
-
-        var rgb = [color1.rgb[0] * w1 + color2.rgb[0] * w2,
-                   color1.rgb[1] * w1 + color2.rgb[1] * w2,
-                   color1.rgb[2] * w1 + color2.rgb[2] * w2];
-
-        var alpha = color1.alpha * p + color2.alpha * (1 - p);
-
-        return new(tree.Color)(rgb, alpha);
-    },
-    greyscale: function (color) {
-        return this.desaturate(color, new(tree.Dimension)(100));
-    },
-    e: function (str) {
-        return new(tree.Anonymous)(str instanceof tree.JavaScript ? str.evaluated : str);
-    },
-    escape: function (str) {
-        return new(tree.Anonymous)(encodeURI(str.value).replace(/=/g, "%3D").replace(/:/g, "%3A").replace(/#/g, "%23").replace(/;/g, "%3B").replace(/\(/g, "%28").replace(/\)/g, "%29"));
-    },
-    '%': function (quoted /* arg, arg, ...*/) {
-        var args = Array.prototype.slice.call(arguments, 1),
-            str = quoted.value;
-
-        for (var i = 0; i < args.length; i++) {
-            str = str.replace(/%[sda]/i, function(token) {
-                var value = token.match(/s/i) ? args[i].value : args[i].toCSS();
-                return token.match(/[A-Z]$/) ? encodeURIComponent(value) : value;
-            });
-        }
-        str = str.replace(/%%/g, '%');
-        return new(tree.Quoted)('"' + str + '"', str);
-    },
-    round: function (n) {
-        if (n instanceof tree.Dimension) {
-            return new(tree.Dimension)(Math.round(number(n)), n.unit);
-        } else if (typeof(n) === 'number') {
-            return Math.round(n);
-        } else {
-	    throw {
-                error: "RuntimeError",
-                message: "math functions take numbers as parameters"
-            };
-        }
-    },
-    argb: function (color) {
-        return new(tree.Anonymous)(color.toARGB());
-
-    }
-};
-
-function hsla(hsla) {
-    return tree.functions.hsla(hsla.h, hsla.s, hsla.l, hsla.a);
-}
-
-function number(n) {
-    if (n instanceof tree.Dimension) {
-        return parseFloat(n.unit == '%' ? n.value / 100 : n.value);
-    } else if (typeof(n) === 'number') {
-        return n;
-    } else {
-        throw {
-            error: "RuntimeError",
-            message: "color functions take numbers as parameters"
-        };
-    }
-}
-
-function clamp(val) {
-    return Math.min(1, Math.max(0, val));
-}
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/index.js b/build-tools/lib/less/index.js
deleted file mode 100644
index 3b4e928d..00000000
--- a/build-tools/lib/less/index.js
+++ /dev/null
@@ -1,143 +0,0 @@
-var path = require('path'),
-    sys = require('sys'),
-    fs = require('fs');
-
-try {
-	// For old node.js versions
-	require.paths.unshift( path.join( __dirname, '..' ) );
-} catch ( ex ) {
-}
-
-var less = {
-    version: [1, 1, 3],
-    Parser: require('less/parser').Parser,
-    importer: require('less/parser').importer,
-    tree: require('less/tree'),
-    render: function (input, options, callback) {
-        options = options || {};
-
-        if (typeof(options) === 'function') {
-            callback = options, options = {};
-        }
-
-        var parser = new(this.Parser)(options),
-            ee;
-
-        if (callback) {
-            parser.parse(input, function (e, root) {
-                callback(e, root.toCSS(options));
-            });
-        } else {
-            ee = new(require('events').EventEmitter);
-
-            process.nextTick(function () {
-                parser.parse(input, function (e, root) {
-                    if (e) { ee.emit('error', e) }
-                    else   { ee.emit('success', root.toCSS(options)) }
-                });
-            });
-            return ee;
-        }
-    },
-    writeError: function (ctx, options) {
-        var message = "";
-        var extract = ctx.extract;
-        var error = [];
-        var stylize = options.color ? less.stylize : function (str) { return str };
-
-        options = options || {};
-
-        if (options.silent) { return }
-
-        if (!ctx.index) {
-            return sys.error(ctx.stack || ctx.message);
-        }
-
-        if (typeof(extract[0]) === 'string') {
-            error.push(stylize((ctx.line - 1) + ' ' + extract[0], 'grey'));
-        }
-
-        error.push(ctx.line + ' ' + extract[1].slice(0, ctx.column)
-                            + stylize(stylize(extract[1][ctx.column], 'bold')
-                            + extract[1].slice(ctx.column + 1), 'yellow'));
-
-        if (typeof(extract[2]) === 'string') {
-            error.push(stylize((ctx.line + 1) + ' ' + extract[2], 'grey'));
-        }
-        error = error.join('\n') + '\033[0m\n';
-
-        message += stylize(ctx.message, 'red');
-        ctx.filename && (message += stylize(' in ', 'red') + ctx.filename);
-
-        sys.error(message, error);
-
-        if (ctx.callLine) {
-            sys.error(stylize('from ', 'red')       + (ctx.filename || ''));
-            sys.error(stylize(ctx.callLine, 'grey') + ' ' + ctx.callExtract);
-        }
-        if (ctx.stack) { sys.error(stylize(ctx.stack, 'red')) }
-    }
-};
-
-['color',    'directive', 'operation',  'dimension',
- 'keyword',  'variable',  'ruleset',    'element',
- 'selector', 'quoted',    'expression', 'rule',
- 'call',     'url',       'alpha',      'import',
- 'mixin',    'comment',   'anonymous',  'value', 'javascript'
-].forEach(function (n) {
-    require(path.join('less', 'tree', n));
-});
-
-less.Parser.importer = function (file, paths, callback) {
-    var pathname;
-
-    paths.unshift('.');
-
-    for (var i = 0; i < paths.length; i++) {
-        try {
-            pathname = path.join(paths[i], file);
-            fs.statSync(pathname);
-            break;
-        } catch (e) {
-            pathname = null;
-        }
-    }
-
-    if (pathname) {
-        fs.readFile(pathname, 'utf-8', function(e, data) {
-          if (e) sys.error(e);
-
-          new(less.Parser)({
-              paths: [path.dirname(pathname)].concat(paths),
-              filename: pathname
-          }).parse(data, function (e, root) {
-              if (e) less.writeError(e);
-              callback(root);
-          });
-        });
-    } else {
-        sys.error("file '" + file + "' wasn't found.\n");
-        process.exit(1);
-    }
-}
-
-require('less/functions');
-
-for (var k in less) { exports[k] = less[k] }
-
-// Stylize a string
-function stylize(str, style) {
-    var styles = {
-        'bold'      : [1,  22],
-        'inverse'   : [7,  27],
-        'underline' : [4,  24],
-        'yellow'    : [33, 39],
-        'green'     : [32, 39],
-        'red'       : [31, 39],
-        'grey'      : [90, 39]
-    };
-    return '\033[' + styles[style][0] + 'm' + str +
-           '\033[' + styles[style][1] + 'm';
-}
-less.stylize = stylize;
-
diff --git a/build-tools/lib/less/parser.js b/build-tools/lib/less/parser.js
deleted file mode 100644
index fae248e5..00000000
--- a/build-tools/lib/less/parser.js
+++ /dev/null
@@ -1,1115 +0,0 @@
-var less, tree;
-
-if (typeof environment === "object" && ({}).toString.call(environment) === "[object Environment]") {
-    // Rhino
-    // Details on how to detect Rhino: https://github.com/ringo/ringojs/issues/88
-    less = {};
-    tree = less.tree = {};
-    less.mode = 'rhino';
-} else if (typeof(window) === 'undefined') {
-    // Node.js
-    less = exports,
-    tree = require('less/tree');
-    less.mode = 'rhino';
-} else {
-    // Browser
-    if (typeof(window.less) === 'undefined') { window.less = {} }
-    less = window.less,
-    tree = window.less.tree = {};
-    less.mode = 'browser';
-}
-//
-// less.js - parser
-//
-//    A relatively straight-forward predictive parser.
-//    There is no tokenization/lexing stage, the input is parsed
-//    in one sweep.
-//
-//    To make the parser fast enough to run in the browser, several
-//    optimization had to be made:
-//
-//    - Matching and slicing on a huge input is often cause of slowdowns.
-//      The solution is to chunkify the input into smaller strings.
-//      The chunks are stored in the `chunks` var,
-//      `j` holds the current chunk index, and `current` holds
-//      the index of the current chunk in relation to `input`.
-//      This gives us an almost 4x speed-up.
-//
-//    - In many cases, we don't need to match individual tokens;
-//      for example, if a value doesn't hold any variables, operations
-//      or dynamic references, the parser can effectively 'skip' it,
-//      treating it as a literal.
-//      An example would be '1px solid #000' - which evaluates to itself,
-//      we don't need to know what the individual components are.
-//      The drawback, of course is that you don't get the benefits of
-//      syntax-checking on the CSS. This gives us a 50% speed-up in the parser,
-//      and a smaller speed-up in the code-gen.
-//
-//
-//    Token matching is done with the `$` function, which either takes
-//    a terminal string or regexp, or a non-terminal function to call.
-//    It also takes care of moving all the indices forwards.
-//
-//
-less.Parser = function Parser(env) {
-    var input,       // LeSS input string
-        i,           // current index in `input`
-        j,           // current chunk
-        temp,        // temporarily holds a chunk's state, for backtracking
-        memo,        // temporarily holds `i`, when backtracking
-        furthest,    // furthest index the parser has gone to
-        chunks,      // chunkified input
-        current,     // index of current chunk, in `input`
-        parser;
-
-    var that = this;
-
-    // This function is called after all files
-    // have been imported through `@import`.
-    var finish = function () {};
-
-    var imports = this.imports = {
-        paths: env && env.paths || [],  // Search paths, when importing
-        queue: [],                      // Files which haven't been imported yet
-        files: {},                      // Holds the imported parse trees
-        mime:  env && env.mime,         // MIME type of .less files
-        push: function (path, callback) {
-            var that = this;
-            this.queue.push(path);
-
-            //
-            // Import a file asynchronously
-            //
-            less.Parser.importer(path, this.paths, function (root) {
-                that.queue.splice(that.queue.indexOf(path), 1); // Remove the path from the queue
-                that.files[path] = root;                        // Store the root
-
-                callback(root);
-
-                if (that.queue.length === 0) { finish() }       // Call `finish` if we're done importing
-            }, env);
-        }
-    };
-
-    function save()    { temp = chunks[j], memo = i, current = i }
-    function restore() { chunks[j] = temp, i = memo, current = i }
-
-    function sync() {
-        if (i > current) {
-            chunks[j] = chunks[j].slice(i - current);
-            current = i;
-        }
-    }
-    //
-    // Parse from a token, regexp or string, and move forward if match
-    //
-    function $(tok) {
-        var match, args, length, c, index, endIndex, k, mem;
-
-        //
-        // Non-terminal
-        //
-        if (tok instanceof Function) {
-            return tok.call(parser.parsers);
-        //
-        // Terminal
-        //
-        //     Either match a single character in the input,
-        //     or match a regexp in the current chunk (chunk[j]).
-        //
-        } else if (typeof(tok) === 'string') {
-            match = input.charAt(i) === tok ? tok : null;
-            length = 1;
-            sync ();
-        } else {
-            sync ();
-
-            if (match = tok.exec(chunks[j])) {
-                length = match[0].length;
-            } else {
-                return null;
-            }
-        }
-
-        // The match is confirmed, add the match length to `i`,
-        // and consume any extra white-space characters (' ' || '\n')
-        // which come after that. The reason for this is that LeSS's
-        // grammar is mostly white-space insensitive.
-        //
-        if (match) {
-            mem = i += length;
-            endIndex = i + chunks[j].length - length;
-
-            while (i < endIndex) {
-                c = input.charCodeAt(i);
-                if (! (c === 32 || c === 10 || c === 9)) { break }
-                i++;
-            }
-            chunks[j] = chunks[j].slice(length + (i - mem));
-            current = i;
-
-            if (chunks[j].length === 0 && j < chunks.length - 1) { j++ }
-
-            if(typeof(match) === 'string') {
-                return match;
-            } else {
-                return match.length === 1 ? match[0] : match;
-            }
-        }
-    }
-
-    // Same as $(), but don't change the state of the parser,
-    // just return the match.
-    function peek(tok) {
-        if (typeof(tok) === 'string') {
-            return input.charAt(i) === tok;
-        } else {
-            if (tok.test(chunks[j])) {
-                return true;
-            } else {
-                return false;
-            }
-        }
-    }
-
-    this.env = env = env || {};
-
-    // The optimization level dictates the thoroughness of the parser,
-    // the lower the number, the less nodes it will create in the tree.
-    // This could matter for debugging, or if you want to access
-    // the individual nodes in the tree.
-    this.optimization = ('optimization' in this.env) ? this.env.optimization : 1;
-
-    this.env.filename = this.env.filename || null;
-
-    //
-    // The Parser
-    //
-    return parser = {
-
-        imports: imports,
-        //
-        // Parse an input string into an abstract syntax tree,
-        // call `callback` when done.
-        //
-        parse: function (str, callback) {
-            var root, start, end, zone, line, lines, buff = [], c, error = null;
-
-            i = j = current = furthest = 0;
-            chunks = [];
-            input = str.replace(/\r\n/g, '\n');
-
-            // Split the input into chunks.
-            chunks = (function (chunks) {
-                var j = 0,
-                    skip = /[^"'`\{\}\/\(\)]+/g,
-                    comment = /\/\*(?:[^*]|\*+[^\/*])*\*+\/|\/\/.*/g,
-                    level = 0,
-                    match,
-                    chunk = chunks[0],
-                    inParam,
-                    inString;
-
-                for (var i = 0, c, cc; i < input.length; i++) {
-                    skip.lastIndex = i;
-                    if (match = skip.exec(input)) {
-                        if (match.index === i) {
-                            i += match[0].length;
-                            chunk.push(match[0]);
-                        }
-                    }
-                    c = input.charAt(i);
-                    comment.lastIndex = i;
-
-                    if (!inString && !inParam && c === '/') {
-                        cc = input.charAt(i + 1);
-                        if (cc === '/' || cc === '*') {
-                            if (match = comment.exec(input)) {
-                                if (match.index === i) {
-                                    i += match[0].length;
-                                    chunk.push(match[0]);
-                                    c = input.charAt(i);
-                                }
-                            }
-                        }
-                    }
-
-                    if        (c === '{' && !inString && !inParam) { level ++;
-                        chunk.push(c);
-                    } else if (c === '}' && !inString && !inParam) { level --;
-                        chunk.push(c);
-                        chunks[++j] = chunk = [];
-                    } else if (c === '(' && !inString && !inParam) {
-                        chunk.push(c);
-                        inParam = true;
-                    } else if (c === ')' && !inString && inParam) {
-                        chunk.push(c);
-                        inParam = false;
-                    } else {
-                        if (c === '"' || c === "'" || c === '`') {
-                            if (! inString) {
-                                inString = c;
-                            } else {
-                                inString = inString === c ? false : inString;
-                            }
-                        }
-                        chunk.push(c);
-                    }
-                }
-                if (level > 0) {
-                    throw {
-                        type: 'Syntax',
-                        message: "Missing closing `}`",
-                        filename: env.filename
-                    };
-                }
-
-                return chunks.map(function (c) { return c.join('') });;
-            })([[]]);
-
-            // Start with the primary rule.
-            // The whole syntax tree is held under a Ruleset node,
-            // with the `root` property set to true, so no `{}` are
-            // output. The callback is called when the input is parsed.
-            root = new(tree.Ruleset)([], $(this.parsers.primary));
-            root.root = true;
-
-            root.toCSS = (function (evaluate) {
-                var line, lines, column;
-
-                return function (options, variables) {
-                    var frames = [];
-
-                    options = options || {};
-                    //
-                    // Allows setting variables with a hash, so:
-                    //
-                    //   `{ color: new(tree.Color)('#f01') }` will become:
-                    //
-                    //   new(tree.Rule)('@color',
-                    //     new(tree.Value)([
-                    //       new(tree.Expression)([
-                    //         new(tree.Color)('#f01')
-                    //       ])
-                    //     ])
-                    //   )
-                    //
-                    if (typeof(variables) === 'object' && !Array.isArray(variables)) {
-                        variables = Object.keys(variables).map(function (k) {
-                            var value = variables[k];
-
-                            if (! (value instanceof tree.Value)) {
-                                if (! (value instanceof tree.Expression)) {
-                                    value = new(tree.Expression)([value]);
-                                }
-                                value = new(tree.Value)([value]);
-                            }
-                            return new(tree.Rule)('@' + k, value, false, 0);
-                        });
-                        frames = [new(tree.Ruleset)(null, variables)];
-                    }
-
-                    try {
-                        var css = evaluate.call(this, { frames: frames })
-                                          .toCSS([], { compress: options.compress || false });
-                    } catch (e) {
-                        lines = input.split('\n');
-                        line = getLine(e.index);
-
-                        for (var n = e.index, column = -1;
-                                 n >= 0 && input.charAt(n) !== '\n';
-                                 n--) { column++ }
-
-                        throw {
-                            type: e.type,
-                            message: e.message,
-                            filename: env.filename,
-                            index: e.index,
-                            line: typeof(line) === 'number' ? line + 1 : null,
-                            callLine: e.call && (getLine(e.call) + 1),
-                            callExtract: lines[getLine(e.call)],
-                            stack: e.stack,
-                            column: column,
-                            extract: [
-                                lines[line - 1],
-                                lines[line],
-                                lines[line + 1]
-                            ]
-                        };
-                    }
-                    if (options.compress) {
-                        return css.replace(/(\s)+/g, "$1");
-                    } else {
-                        return css;
-                    }
-
-                    function getLine(index) {
-                        return index ? (input.slice(0, index).match(/\n/g) || "").length : null;
-                    }
-                };
-            })(root.eval);
-
-            // If `i` is smaller than the `input.length - 1`,
-            // it means the parser wasn't able to parse the whole
-            // string, so we've got a parsing error.
-            //
-            // We try to extract a \n delimited string,
-            // showing the line where the parse error occured.
-            // We split it up into two parts (the part which parsed,
-            // and the part which didn't), so we can color them differently.
-            if (i < input.length - 1) {
-                i = furthest;
-                lines = input.split('\n');
-                line = (input.slice(0, i).match(/\n/g) || "").length + 1;
-
-                for (var n = i, column = -1; n >= 0 && input.charAt(n) !== '\n'; n--) { column++ }
-
-                error = {
-                    name: "ParseError",
-                    message: "Syntax Error on line " + line,
-                    index: i,
-                    filename: env.filename,
-                    line: line,
-                    column: column,
-                    extract: [
-                        lines[line - 2],
-                        lines[line - 1],
-                        lines[line]
-                    ]
-                };
-            }
-
-            if (this.imports.queue.length > 0) {
-                finish = function () { callback(error, root) };
-            } else {
-                callback(error, root);
-            }
-        },
-
-        //
-        // Here in, the parsing rules/functions
-        //
-        // The basic structure of the syntax tree generated is as follows:
-        //
-        //   Ruleset ->  Rule -> Value -> Expression -> Entity
-        //
-        // Here's some LESS code:
-        //
-        //    .class {
-        //      color: #fff;
-        //      border: 1px solid #000;
-        //      width: @w + 4px;
-        //      > .child {...}
-        //    }
-        //
-        // And here's what the parse tree might look like:
-        //
-        //     Ruleset (Selector '.class', [
-        //         Rule ("color",  Value ([Expression [Color #fff]]))
-        //         Rule ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]]))
-        //         Rule ("width",  Value ([Expression [Operation "+" [Variable "@w"][Dimension 4px]]]))
-        //         Ruleset (Selector [Element '>', '.child'], [...])
-        //     ])
-        //
-        //  In general, most rules will try to parse a token with the `$()` function, and if the return
-        //  value is truly, will return a new node, of the relevant type. Sometimes, we need to check
-        //  first, before parsing, that's when we use `peek()`.
-        //
-        parsers: {
-            //
-            // The `primary` rule is the *entry* and *exit* point of the parser.
-            // The rules here can appear at any level of the parse tree.
-            //
-            // The recursive nature of the grammar is an interplay between the `block`
-            // rule, which represents `{ ... }`, the `ruleset` rule, and this `primary` rule,
-            // as represented by this simplified grammar:
-            //
-            //     primary  →  (ruleset | rule)+
-            //     ruleset  →  selector+ block
-            //     block    →  '{' primary '}'
-            //
-            // Only at one point is the primary rule not called from the
-            // block rule: at the root level.
-            //
-            primary: function () {
-                var node, root = [];
-
-                while ((node = $(this.mixin.definition) || $(this.rule)    ||  $(this.ruleset) ||
-                               $(this.mixin.call)       || $(this.comment) ||  $(this.directive))
-                               || $(/^[\s\n]+/)) {
-                    node && root.push(node);
-                }
-                return root;
-            },
-
-            // We create a Comment node for CSS comments `/* */`,
-            // but keep the LeSS comments `//` silent, by just skipping
-            // over them.
-            comment: function () {
-                var comment;
-
-                if (input.charAt(i) !== '/') return;
-
-                if (input.charAt(i + 1) === '/') {
-                    return new(tree.Comment)($(/^\/\/.*/), true);
-                } else if (comment = $(/^\/\*(?:[^*]|\*+[^\/*])*\*+\/\n?/)) {
-                    return new(tree.Comment)(comment);
-                }
-            },
-
-            //
-            // Entities are tokens which can be found inside an Expression
-            //
-            entities: {
-                //
-                // A string, which supports escaping " and '
-                //
-                //     "milky way" 'he\'s the one!'
-                //
-                quoted: function () {
-                    var str, j = i, e;
-
-                    if (input.charAt(j) === '~') { j++, e = true } // Escaped strings
-                    if (input.charAt(j) !== '"' && input.charAt(j) !== "'") return;
-
-                    e && $('~');
-
-                    if (str = $(/^"((?:[^"\\\r\n]|\\.)*)"|'((?:[^'\\\r\n]|\\.)*)'/)) {
-                        return new(tree.Quoted)(str[0], str[1] || str[2], e);
-                    }
-                },
-
-                //
-                // A catch-all word, such as:
-                //
-                //     black border-collapse
-                //
-                keyword: function () {
-                    var k;
-                    if (k = $(/^[_A-Za-z-][_A-Za-z0-9-]*/)) { return new(tree.Keyword)(k) }
-                },
-
-                //
-                // A function call
-                //
-                //     rgb(255, 0, 255)
-                //
-                // We also try to catch IE's `alpha()`, but let the `alpha` parser
-                // deal with the details.
-                //
-                // The arguments are parsed with the `entities.arguments` parser.
-                //
-                call: function () {
-                    var name, args, index = i;
-
-                    if (! (name = /^([\w-]+|%)\(/.exec(chunks[j]))) return;
-
-                    name = name[1].toLowerCase();
-
-                    if (name === 'url') { return null }
-                    else                { i += name.length }
-
-                    if (name === 'alpha') { return $(this.alpha) }
-
-                    $('('); // Parse the '(' and consume whitespace.
-
-                    args = $(this.entities.arguments);
-
-                    if (! $(')')) return;
-
-                    if (name) { return new(tree.Call)(name, args, index) }
-                },
-                arguments: function () {
-                    var args = [], arg;
-
-                    while (arg = $(this.expression)) {
-                        args.push(arg);
-                        if (! $(',')) { break }
-                    }
-                    return args;
-                },
-                literal: function () {
-                    return $(this.entities.dimension) ||
-                           $(this.entities.color) ||
-                           $(this.entities.quoted);
-                },
-
-                //
-                // Parse url() tokens
-                //
-                // We use a specific rule for urls, because they don't really behave like
-                // standard function calls. The difference is that the argument doesn't have
-                // to be enclosed within a string, so it can't be parsed as an Expression.
-                //
-                url: function () {
-                    var value;
-
-                    if (input.charAt(i) !== 'u' || !$(/^url\(/)) return;
-                    value = $(this.entities.quoted)  || $(this.entities.variable) ||
-                            $(this.entities.dataURI) || $(/^[-\w%@$\/.&=:;#+?~]+/) || "";
-                    if (! $(')')) throw new(Error)("missing closing ) for url()");
-
-                    return new(tree.URL)((value.value || value.data || value instanceof tree.Variable)
-                                        ? value : new(tree.Anonymous)(value), imports.paths);
-                },
-
-                dataURI: function () {
-                    var obj;
-
-                    if ($(/^data:/)) {
-                        obj         = {};
-                        obj.mime    = $(/^[^\/]+\/[^,;)]+/)     || '';
-                        obj.charset = $(/^;\s*charset=[^,;)]+/) || '';
-                        obj.base64  = $(/^;\s*base64/)          || '';
-                        obj.data    = $(/^,\s*[^)]+/);
-
-                        if (obj.data) { return obj }
-                    }
-                },
-
-                //
-                // A Variable entity, such as `@fink`, in
-                //
-                //     width: @fink + 2px
-                //
-                // We use a different parser for variable definitions,
-                // see `parsers.variable`.
-                //
-                variable: function () {
-                    var name, index = i;
-
-                    if (input.charAt(i) === '@' && (name = $(/^@@?[\w-]+/))) {
-                        return new(tree.Variable)(name, index);
-                    }
-                },
-
-                //
-                // A Hexadecimal color
-                //
-                //     #4F3C2F
-                //
-                // `rgb` and `hsl` colors are parsed through the `entities.call` parser.
-                //
-                color: function () {
-                    var rgb;
-
-                    if (input.charAt(i) === '#' && (rgb = $(/^#([a-fA-F0-9]{6}|[a-fA-F0-9]{3})/))) {
-                        return new(tree.Color)(rgb[1]);
-                    }
-                },
-
-                //
-                // A Dimension, that is, a number and a unit
-                //
-                //     0.5em 95%
-                //
-                dimension: function () {
-                    var value, c = input.charCodeAt(i);
-                    if ((c > 57 || c < 45) || c === 47) return;
-
-                    if (value = $(/^(-?\d*\.?\d+)(px|%|em|rem|pc|ex|in|deg|s|ms|pt|cm|mm|rad|grad|turn)?/)) {
-                        return new(tree.Dimension)(value[1], value[2]);
-                    }
-                },
-
-                //
-                // JavaScript code to be evaluated
-                //
-                //     `window.location.href`
-                //
-                javascript: function () {
-                    var str, j = i, e;
-
-                    if (input.charAt(j) === '~') { j++, e = true } // Escaped strings
-                    if (input.charAt(j) !== '`') { return }
-
-                    e && $('~');
-
-                    if (str = $(/^`([^`]*)`/)) {
-                        return new(tree.JavaScript)(str[1], i, e);
-                    }
-                }
-            },
-
-            //
-            // The variable part of a variable definition. Used in the `rule` parser
-            //
-            //     @fink:
-            //
-            variable: function () {
-                var name;
-
-                if (input.charAt(i) === '@' && (name = $(/^(@[\w-]+)\s*:/))) { return name[1] }
-            },
-
-            //
-            // A font size/line-height shorthand
-            //
-            //     small/12px
-            //
-            // We need to peek first, or we'll match on keywords and dimensions
-            //
-            shorthand: function () {
-                var a, b;
-
-                if (! peek(/^[@\w.%-]+\/[@\w.-]+/)) return;
-
-                if ((a = $(this.entity)) && $('/') && (b = $(this.entity))) {
-                    return new(tree.Shorthand)(a, b);
-                }
-            },
-
-            //
-            // Mixins
-            //
-            mixin: {
-                //
-                // A Mixin call, with an optional argument list
-                //
-                //     #mixins > .square(#fff);
-                //     .rounded(4px, black);
-                //     .button;
-                //
-                // The `while` loop is there because mixins can be
-                // namespaced, but we only support the child and descendant
-                // selector for now.
-                //
-                call: function () {
-                    var elements = [], e, c, args, index = i, s = input.charAt(i);
-
-                    if (s !== '.' && s !== '#') { return }
-
-                    while (e = $(/^[#.](?:[\w-]|\\(?:[a-fA-F0-9]{1,6} ?|[^a-fA-F0-9]))+/)) {
-                        elements.push(new(tree.Element)(c, e));
-                        c = $('>');
-                    }
-                    $('(') && (args = $(this.entities.arguments)) && $(')');
-
-                    if (elements.length > 0 && ($(';') || peek('}'))) {
-                        return new(tree.mixin.Call)(elements, args, index);
-                    }
-                },
-
-                //
-                // A Mixin definition, with a list of parameters
-                //
-                //     .rounded (@radius: 2px, @color) {
-                //        ...
-                //     }
-                //
-                // Until we have a finer grained state-machine, we have to
-                // do a look-ahead, to make sure we don't have a mixin call.
-                // See the `rule` function for more information.
-                //
-                // We start by matching `.rounded (`, and then proceed on to
-                // the argument list, which has optional default values.
-                // We store the parameters in `params`, with a `value` key,
-                // if there is a value, such as in the case of `@radius`.
-                //
-                // Once we've got our params list, and a closing `)`, we parse
-                // the `{...}` block.
-                //
-                definition: function () {
-                    var name, params = [], match, ruleset, param, value;
-
-                    if ((input.charAt(i) !== '.' && input.charAt(i) !== '#') ||
-                        peek(/^[^{]*(;|})/)) return;
-
-                    if (match = $(/^([#.](?:[\w-]|\\(?:[a-fA-F0-9]{1,6} ?|[^a-fA-F0-9]))+)\s*\(/)) {
-                        name = match[1];
-
-                        while (param = $(this.entities.variable) || $(this.entities.literal)
-                                                                 || $(this.entities.keyword)) {
-                            // Variable
-                            if (param instanceof tree.Variable) {
-                                if ($(':')) {
-                                    if (value = $(this.expression)) {
-                                        params.push({ name: param.name, value: value });
-                                    } else {
-                                        throw new(Error)("Expected value");
-                                    }
-                                } else {
-                                    params.push({ name: param.name });
-                                }
-                            } else {
-                                params.push({ value: param });
-                            }
-                            if (! $(',')) { break }
-                        }
-                        if (! $(')')) throw new(Error)("Expected )");
-
-                        ruleset = $(this.block);
-
-                        if (ruleset) {
-                            return new(tree.mixin.Definition)(name, params, ruleset);
-                        }
-                    }
-                }
-            },
-
-            //
-            // Entities are the smallest recognized token,
-            // and can be found inside a rule's value.
-            //
-            entity: function () {
-                return $(this.entities.literal) || $(this.entities.variable) || $(this.entities.url) ||
-                       $(this.entities.call)    || $(this.entities.keyword)  || $(this.entities.javascript) ||
-                       $(this.comment);
-            },
-
-            //
-            // A Rule terminator. Note that we use `peek()` to check for '}',
-            // because the `block` rule will be expecting it, but we still need to make sure
-            // it's there, if ';' was ommitted.
-            //
-            end: function () {
-                return $(';') || peek('}');
-            },
-
-            //
-            // IE's alpha function
-            //
-            //     alpha(opacity=88)
-            //
-            alpha: function () {
-                var value;
-
-                if (! $(/^\(opacity=/i)) return;
-                if (value = $(/^\d+/) || $(this.entities.variable)) {
-                    if (! $(')')) throw new(Error)("missing closing ) for alpha()");
-                    return new(tree.Alpha)(value);
-                }
-            },
-
-            //
-            // A Selector Element
-            //
-            //     div
-            //     + h1
-            //     #socks
-            //     input[type="text"]
-            //
-            // Elements are the building blocks for Selectors,
-            // they are made out of a `Combinator` (see combinator rule),
-            // and an element name, such as a tag a class, or `*`.
-            //
-            element: function () {
-                var e, t, c;
-
-                c = $(this.combinator);
-                e = $(/^(?:[.#]?|:*)(?:[\w-]|\\(?:[a-fA-F0-9]{1,6} ?|[^a-fA-F0-9]))+/) || $('*') || $(this.attribute) || $(/^\([^)@]+\)/) || $(/^(?:\d*\.)?\d+%/);
-
-                if (e) { return new(tree.Element)(c, e) }
-
-                if (c.value && c.value[0] === '&') {
-                  return new(tree.Element)(c, null);
-                }
-            },
-
-            //
-            // Combinators combine elements together, in a Selector.
-            //
-            // Because our parser isn't white-space sensitive, special care
-            // has to be taken, when parsing the descendant combinator, ` `,
-            // as it's an empty space. We have to check the previous character
-            // in the input, to see if it's a ` ` character. More info on how
-            // we deal with this in *combinator.js*.
-            //
-            combinator: function () {
-                var match, c = input.charAt(i);
-
-                if (c === '>' || c === '+' || c === '~') {
-                    i++;
-                    while (input.charAt(i) === ' ') { i++ }
-                    return new(tree.Combinator)(c);
-                } else if (c === '&') {
-                    match = '&';
-                    i++;
-                    if(input.charAt(i) === ' ') {
-                        match = '& ';
-                    }
-                    while (input.charAt(i) === ' ') { i++ }
-                    return new(tree.Combinator)(match);
-                } else if (c === ':' && input.charAt(i + 1) === ':') {
-                    i += 2;
-                    while (input.charAt(i) === ' ') { i++ }
-                    return new(tree.Combinator)('::');
-                } else if (input.charAt(i - 1) === ' ') {
-                    return new(tree.Combinator)(" ");
-                } else {
-                    return new(tree.Combinator)(null);
-                }
-            },
-
-            //
-            // A CSS Selector
-            //
-            //     .class > div + h1
-            //     li a:hover
-            //
-            // Selectors are made out of one or more Elements, see above.
-            //
-            selector: function () {
-                var sel, e, elements = [], c, match;
-
-                while (e = $(this.element)) {
-                    c = input.charAt(i);
-                    elements.push(e)
-                    if (c === '{' || c === '}' || c === ';' || c === ',') { break }
-                }
-
-                if (elements.length > 0) { return new(tree.Selector)(elements) }
-            },
-            tag: function () {
-                return $(/^[a-zA-Z][a-zA-Z-]*[0-9]?/) || $('*');
-            },
-            attribute: function () {
-                var attr = '', key, val, op;
-
-                if (! $('[')) return;
-
-                if (key = $(/^[a-zA-Z-]+/) || $(this.entities.quoted)) {
-                    if ((op = $(/^[|~*$^]?=/)) &&
-                        (val = $(this.entities.quoted) || $(/^[\w-]+/))) {
-                        attr = [key, op, val.toCSS ? val.toCSS() : val].join('');
-                    } else { attr = key }
-                }
-
-                if (! $(']')) return;
-
-                if (attr) { return "[" + attr + "]" }
-            },
-
-            //
-            // The `block` rule is used by `ruleset` and `mixin.definition`.
-            // It's a wrapper around the `primary` rule, with added `{}`.
-            //
-            block: function () {
-                var content;
-
-                if ($('{') && (content = $(this.primary)) && $('}')) {
-                    return content;
-                }
-            },
-
-            //
-            // div, .class, body > p {...}
-            //
-            ruleset: function () {
-                var selectors = [], s, rules, match;
-                save();
-
-                while (s = $(this.selector)) {
-                    selectors.push(s);
-                    $(this.comment);
-                    if (! $(',')) { break }
-                    $(this.comment);
-                }
-
-                if (selectors.length > 0 && (rules = $(this.block))) {
-                    return new(tree.Ruleset)(selectors, rules);
-                } else {
-                    // Backtrack
-                    furthest = i;
-                    restore();
-                }
-            },
-            rule: function () {
-                var name, value, c = input.charAt(i), important, match;
-                save();
-
-                if (c === '.' || c === '#' || c === '&') { return }
-
-                if (name = $(this.variable) || $(this.property)) {
-                    if ((name.charAt(0) != '@') && (match = /^([^@+\/'"*`(;{}-]*);/.exec(chunks[j]))) {
-                        i += match[0].length - 1;
-                        value = new(tree.Anonymous)(match[1]);
-                    } else if (name === "font") {
-                        value = $(this.font);
-                    } else {
-                        value = $(this.value);
-                    }
-                    important = $(this.important);
-
-                    if (value && $(this.end)) {
-                        return new(tree.Rule)(name, value, important, memo);
-                    } else {
-                        furthest = i;
-                        restore();
-                    }
-                }
-            },
-
-            //
-            // An @import directive
-            //
-            //     @import "lib";
-            //
-            // Depending on our environemnt, importing is done differently:
-            // In the browser, it's an XHR request, in Node, it would be a
-            // file-system operation. The function used for importing is
-            // stored in `import`, which we pass to the Import constructor.
-            //
-            "import": function () {
-                var path;
-                if ($(/^@import\s+/) &&
-                    (path = $(this.entities.quoted) || $(this.entities.url)) &&
-                    $(';')) {
-                    return new(tree.Import)(path, imports);
-                }
-            },
-
-            //
-            // A CSS Directive
-            //
-            //     @charset "utf-8";
-            //
-            directive: function () {
-                var name, value, rules, types;
-
-                if (input.charAt(i) !== '@') return;
-
-                if (value = $(this['import'])) {
-                    return value;
-                } else if (name = $(/^@media|@page/) || $(/^@(?:-webkit-|-moz-)?keyframes/)) {
-                    types = ($(/^[^{]+/) || '').trim();
-                    if (rules = $(this.block)) {
-                        return new(tree.Directive)(name + " " + types, rules);
-                    }
-                } else if (name = $(/^@[-a-z]+/)) {
-                    if (name === '@font-face') {
-                        if (rules = $(this.block)) {
-                            return new(tree.Directive)(name, rules);
-                        }
-                    } else if ((value = $(this.entity)) && $(';')) {
-                        return new(tree.Directive)(name, value);
-                    }
-                }
-            },
-            font: function () {
-                var value = [], expression = [], weight, shorthand, font, e;
-
-                while (e = $(this.shorthand) || $(this.entity)) {
-                    expression.push(e);
-                }
-                value.push(new(tree.Expression)(expression));
-
-                if ($(',')) {
-                    while (e = $(this.expression)) {
-                        value.push(e);
-                        if (! $(',')) { break }
-                    }
-                }
-                return new(tree.Value)(value);
-            },
-
-            //
-            // A Value is a comma-delimited list of Expressions
-            //
-            //     font-family: Baskerville, Georgia, serif;
-            //
-            // In a Rule, a Value represents everything after the `:`,
-            // and before the `;`.
-            //
-            value: function () {
-                var e, expressions = [], important;
-
-                while (e = $(this.expression)) {
-                    expressions.push(e);
-                    if (! $(',')) { break }
-                }
-
-                if (expressions.length > 0) {
-                    return new(tree.Value)(expressions);
-                }
-            },
-            important: function () {
-                if (input.charAt(i) === '!') {
-                    return $(/^! *important/);
-                }
-            },
-            sub: function () {
-                var e;
-
-                if ($('(') && (e = $(this.expression)) && $(')')) {
-                    return e;
-                }
-            },
-            multiplication: function () {
-                var m, a, op, operation;
-                if (m = $(this.operand)) {
-                    while ((op = ($('/') || $('*'))) && (a = $(this.operand))) {
-                        operation = new(tree.Operation)(op, [operation || m, a]);
-                    }
-                    return operation || m;
-                }
-            },
-            addition: function () {
-                var m, a, op, operation;
-                if (m = $(this.multiplication)) {
-                    while ((op = $(/^[-+]\s+/) || (input.charAt(i - 1) != ' ' && ($('+') || $('-')))) &&
-                           (a = $(this.multiplication))) {
-                        operation = new(tree.Operation)(op, [operation || m, a]);
-                    }
-                    return operation || m;
-                }
-            },
-
-            //
-            // An operand is anything that can be part of an operation,
-            // such as a Color, or a Variable
-            //
-            operand: function () {
-                var negate, p = input.charAt(i + 1);
-
-                if (input.charAt(i) === '-' && (p === '@' || p === '(')) { negate = $('-') }
-                var o = $(this.sub) || $(this.entities.dimension) ||
-                        $(this.entities.color) || $(this.entities.variable) ||
-                        $(this.entities.call);
-                return negate ? new(tree.Operation)('*', [new(tree.Dimension)(-1), o])
-                              : o;
-            },
-
-            //
-            // Expressions either represent mathematical operations,
-            // or white-space delimited Entities.
-            //
-            //     1px solid black
-            //     @var * 2
-            //
-            expression: function () {
-                var e, delim, entities = [], d;
-
-                while (e = $(this.addition) || $(this.entity)) {
-                    entities.push(e);
-                }
-                if (entities.length > 0) {
-                    return new(tree.Expression)(entities);
-                }
-            },
-            property: function () {
-                var name;
-
-                if (name = $(/^(\*?-?[-a-z_0-9]+)\s*:/)) {
-                    return name[1];
-                }
-            }
-        }
-    };
-};
-
-if (less.mode === 'browser' || less.mode === 'rhino') {
-    //
-    // Used by `@import` directives
-    //
-    less.Parser.importer = function (path, paths, callback, env) {
-        if (path.charAt(0) !== '/' && paths.length > 0) {
-            path = paths[0] + path;
-        }
-        // We pass `true` as 3rd argument, to force the reload of the import.
-        // This is so we can get the syntax tree as opposed to just the CSS output,
-        // as we need this to evaluate the current stylesheet.
-        loadStyleSheet({ href: path, title: path, type: env.mime }, callback, true);
-    };
-}
-
diff --git a/build-tools/lib/less/rhino.js b/build-tools/lib/less/rhino.js
deleted file mode 100644
index ab1c8868..00000000
--- a/build-tools/lib/less/rhino.js
+++ /dev/null
@@ -1,60 +0,0 @@
-var name;
-
-function loadStyleSheet(sheet, callback, reload, remaining) {
-    var sheetName = name.slice(0, name.lastIndexOf('/') + 1) + sheet.href;
-    var input = readFile(sheetName);
-    var parser = new less.Parser();
-    parser.parse(input, function (e, root) {
-        if (e) {
-            print("Error: " + e);
-            quit(1);
-        }
-        callback(root, sheet, { local: false, lastModified: 0, remaining: remaining });
-    });
-
-    // callback({}, sheet, { local: true, remaining: remaining });
-}
-
-function writeFile(filename, content) {
-    var fstream = new java.io.FileWriter(filename);
-    var out = new java.io.BufferedWriter(fstream);
-    out.write(content);
-    out.close();
-}
-
-// Command line integration via Rhino
-(function (args) {
-    name = args[0];
-    var output = args[1];
-
-    if (!name) {
-        print('No files present in the fileset; Check your pattern match in build.xml');
-        quit(1);
-    }
-    path = name.split("/");path.pop();path=path.join("/")
-
-    var input = readFile(name);
-
-    if (!input) {
-        print('lesscss: couldn\'t open file ' + name);
-        quit(1);
-    }
-
-    var result;
-    var parser = new less.Parser();
-    parser.parse(input, function (e, root) {
-        if (e) {
-            quit(1);
-        } else {
-            result = root.toCSS();
-            if (output) {
-                writeFile(output, result);
-                print("Written to " + output);
-            } else {
-                print(result);
-            }
-            quit(0);
-        }
-    });
-    print("done");
-}(arguments));
diff --git a/build-tools/lib/less/tree.js b/build-tools/lib/less/tree.js
deleted file mode 100644
index eb08aa4f..00000000
--- a/build-tools/lib/less/tree.js
+++ /dev/null
@@ -1,13 +0,0 @@
-require('less/tree').find = function (obj, fun) {
-    for (var i = 0, r; i < obj.length; i++) {
-        if (r = fun.call(obj, obj[i])) { return r }
-    }
-    return null;
-};
-require('less/tree').jsify = function (obj) {
-    if (Array.isArray(obj.value) && (obj.value.length > 1)) {
-        return '[' + obj.value.map(function (v) { return v.toCSS(false) }).join(', ') + ']';
-    } else {
-        return obj.toCSS(false);
-    }
-};
diff --git a/build-tools/lib/less/tree/alpha.js b/build-tools/lib/less/tree/alpha.js
deleted file mode 100644
index 551ccba6..00000000
--- a/build-tools/lib/less/tree/alpha.js
+++ /dev/null
@@ -1,17 +0,0 @@
-(function (tree) {
-
-tree.Alpha = function (val) {
-    this.value = val;
-};
-tree.Alpha.prototype = {
-    toCSS: function () {
-        return "alpha(opacity=" +
-               (this.value.toCSS ? this.value.toCSS() : this.value) + ")";
-    },
-    eval: function (env) {
-        if (this.value.eval) { this.value = this.value.eval(env) }
-        return this;
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/anonymous.js b/build-tools/lib/less/tree/anonymous.js
deleted file mode 100644
index 89840d0d..00000000
--- a/build-tools/lib/less/tree/anonymous.js
+++ /dev/null
@@ -1,13 +0,0 @@
-(function (tree) {
-
-tree.Anonymous = function (string) {
-    this.value = string.value || string;
-};
-tree.Anonymous.prototype = {
-    toCSS: function () {
-        return this.value;
-    },
-    eval: function () { return this }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/call.js b/build-tools/lib/less/tree/call.js
deleted file mode 100644
index 4a72932b..00000000
--- a/build-tools/lib/less/tree/call.js
+++ /dev/null
@@ -1,45 +0,0 @@
-(function (tree) {
-
-//
-// A function call node.
-//
-tree.Call = function (name, args, index) {
-    this.name = name;
-    this.args = args;
-    this.index = index;
-};
-tree.Call.prototype = {
-    //
-    // When evaluating a function call,
-    // we either find the function in `tree.functions` [1],
-    // in which case we call it, passing the  evaluated arguments,
-    // or we simply print it out as it appeared originally [2].
-    //
-    // The *functions.js* file contains the built-in functions.
-    //
-    // The reason why we evaluate the arguments, is in the case where
-    // we try to pass a variable to a function, like: `saturate(@color)`.
-    // The function should receive the value, not the variable.
-    //
-    eval: function (env) {
-        var args = this.args.map(function (a) { return a.eval(env) });
-
-        if (this.name in tree.functions) { // 1.
-            try {
-                return tree.functions[this.name].apply(tree.functions, args);
-            } catch (e) {
-                throw { message: "error evaluating function `" + this.name + "`",
-                        index: this.index };
-            }
-        } else { // 2.
-            return new(tree.Anonymous)(this.name +
-                   "(" + args.map(function (a) { return a.toCSS() }).join(', ') + ")");
-        }
-    },
-
-    toCSS: function (env) {
-        return this.eval(env).toCSS();
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/color.js b/build-tools/lib/less/tree/color.js
deleted file mode 100644
index bb7646a5..00000000
--- a/build-tools/lib/less/tree/color.js
+++ /dev/null
@@ -1,101 +0,0 @@
-(function (tree) {
-//
-// RGB Colors - #ff0014, #eee
-//
-tree.Color = function (rgb, a) {
-    //
-    // The end goal here, is to parse the arguments
-    // into an integer triplet, such as `128, 255, 0`
-    //
-    // This facilitates operations and conversions.
-    //
-    if (Array.isArray(rgb)) {
-        this.rgb = rgb;
-    } else if (rgb.length == 6) {
-        this.rgb = rgb.match(/.{2}/g).map(function (c) {
-            return parseInt(c, 16);
-        });
-    } else {
-        this.rgb = rgb.split('').map(function (c) {
-            return parseInt(c + c, 16);
-        });
-    }
-    this.alpha = typeof(a) === 'number' ? a : 1;
-};
-tree.Color.prototype = {
-    eval: function () { return this },
-
-    //
-    // If we have some transparency, the only way to represent it
-    // is via `rgba`. Otherwise, we use the hex representation,
-    // which has better compatibility with older browsers.
-    // Values are capped between `0` and `255`, rounded and zero-padded.
-    //
-    toCSS: function () {
-        if (this.alpha < 1.0) {
-            return "rgba(" + this.rgb.map(function (c) {
-                return Math.round(c);
-            }).concat(this.alpha).join(', ') + ")";
-        } else {
-            return '#' + this.rgb.map(function (i) {
-                i = Math.round(i);
-                i = (i > 255 ? 255 : (i < 0 ? 0 : i)).toString(16);
-                return i.length === 1 ? '0' + i : i;
-            }).join('');
-        }
-    },
-
-    //
-    // Operations have to be done per-channel, if not,
-    // channels will spill onto each other. Once we have
-    // our result, in the form of an integer triplet,
-    // we create a new Color node to hold the result.
-    //
-    operate: function (op, other) {
-        var result = [];
-
-        if (! (other instanceof tree.Color)) {
-            other = other.toColor();
-        }
-
-        for (var c = 0; c < 3; c++) {
-            result[c] = tree.operate(op, this.rgb[c], other.rgb[c]);
-        }
-        return new(tree.Color)(result, this.alpha + other.alpha);
-    },
-
-    toHSL: function () {
-        var r = this.rgb[0] / 255,
-            g = this.rgb[1] / 255,
-            b = this.rgb[2] / 255,
-            a = this.alpha;
-
-        var max = Math.max(r, g, b), min = Math.min(r, g, b);
-        var h, s, l = (max + min) / 2, d = max - min;
-
-        if (max === min) {
-            h = s = 0;
-        } else {
-            s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
-
-            switch (max) {
-                case r: h = (g - b) / d + (g < b ? 6 : 0); break;
-                case g: h = (b - r) / d + 2;               break;
-                case b: h = (r - g) / d + 4;               break;
-            }
-            h /= 6;
-        }
-        return { h: h * 360, s: s, l: l, a: a };
-    },
-    toARGB: function () {
-        var argb = [Math.round(this.alpha * 255)].concat(this.rgb);
-        return '#' + argb.map(function (i) {
-            i = Math.round(i);
-            i = (i > 255 ? 255 : (i < 0 ? 0 : i)).toString(16);
-            return i.length === 1 ? '0' + i : i;
-        }).join('');
-    }
-};
-
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/comment.js b/build-tools/lib/less/tree/comment.js
deleted file mode 100644
index 2d95dff8..00000000
--- a/build-tools/lib/less/tree/comment.js
+++ /dev/null
@@ -1,14 +0,0 @@
-(function (tree) {
-
-tree.Comment = function (value, silent) {
-    this.value = value;
-    this.silent = !!silent;
-};
-tree.Comment.prototype = {
-    toCSS: function (env) {
-        return env.compress ? '' : this.value;
-    },
-    eval: function () { return this }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/dimension.js b/build-tools/lib/less/tree/dimension.js
deleted file mode 100644
index 41f3ca2c..00000000
--- a/build-tools/lib/less/tree/dimension.js
+++ /dev/null
@@ -1,34 +0,0 @@
-(function (tree) {
-
-//
-// A number with a unit
-//
-tree.Dimension = function (value, unit) {
-    this.value = parseFloat(value);
-    this.unit = unit || null;
-};
-
-tree.Dimension.prototype = {
-    eval: function () { return this },
-    toColor: function () {
-        return new(tree.Color)([this.value, this.value, this.value]);
-    },
-    toCSS: function () {
-        var css = this.value + this.unit;
-        return css;
-    },
-
-    // In an operation between two Dimensions,
-    // we default to the first Dimension's unit,
-    // so `1px + 2em` will yield `3px`.
-    // In the future, we could implement some unit
-    // conversions such that `100cm + 10mm` would yield
-    // `101cm`.
-    operate: function (op, other) {
-        return new(tree.Dimension)
-                  (tree.operate(op, this.value, other.value),
-                  this.unit || other.unit);
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/directive.js b/build-tools/lib/less/tree/directive.js
deleted file mode 100644
index fbe9a93e..00000000
--- a/build-tools/lib/less/tree/directive.js
+++ /dev/null
@@ -1,33 +0,0 @@
-(function (tree) {
-
-tree.Directive = function (name, value) {
-    this.name = name;
-    if (Array.isArray(value)) {
-        this.ruleset = new(tree.Ruleset)([], value);
-    } else {
-        this.value = value;
-    }
-};
-tree.Directive.prototype = {
-    toCSS: function (ctx, env) {
-        if (this.ruleset) {
-            this.ruleset.root = true;
-            return this.name + (env.compress ? '{' : ' {\n  ') +
-                   this.ruleset.toCSS(ctx, env).trim().replace(/\n/g, '\n  ') +
-                               (env.compress ? '}': '\n}\n');
-        } else {
-            return this.name + ' ' + this.value.toCSS() + ';\n';
-        }
-    },
-    eval: function (env) {
-        env.frames.unshift(this);
-        this.ruleset = this.ruleset && this.ruleset.eval(env);
-        env.frames.shift();
-        return this;
-    },
-    variable: function (name) { return tree.Ruleset.prototype.variable.call(this.ruleset, name) },
-    find: function () { return tree.Ruleset.prototype.find.apply(this.ruleset, arguments) },
-    rulesets: function () { return tree.Ruleset.prototype.rulesets.apply(this.ruleset) }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/element.js b/build-tools/lib/less/tree/element.js
deleted file mode 100644
index 27cf8228..00000000
--- a/build-tools/lib/less/tree/element.js
+++ /dev/null
@@ -1,35 +0,0 @@
-(function (tree) {
-
-tree.Element = function (combinator, value) {
-    this.combinator = combinator instanceof tree.Combinator ?
-                      combinator : new(tree.Combinator)(combinator);
-    this.value = value ? value.trim() : "";
-};
-tree.Element.prototype.toCSS = function (env) {
-    return this.combinator.toCSS(env || {}) + this.value;
-};
-
-tree.Combinator = function (value) {
-    if (value === ' ') {
-        this.value = ' ';
-    } else if (value === '& ') {
-        this.value = '& ';
-    } else {
-        this.value = value ? value.trim() : "";
-    }
-};
-tree.Combinator.prototype.toCSS = function (env) {
-    return {
-        ''  : '',
-        ' ' : ' ',
-        '&' : '',
-        '& ' : ' ',
-        ':' : ' :',
-        '::': '::',
-        '+' : env.compress ? '+' : ' + ',
-        '~' : env.compress ? '~' : ' ~ ',
-        '>' : env.compress ? '>' : ' > '
-    }[this.value];
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/expression.js b/build-tools/lib/less/tree/expression.js
deleted file mode 100644
index f638a1be..00000000
--- a/build-tools/lib/less/tree/expression.js
+++ /dev/null
@@ -1,23 +0,0 @@
-(function (tree) {
-
-tree.Expression = function (value) { this.value = value };
-tree.Expression.prototype = {
-    eval: function (env) {
-        if (this.value.length > 1) {
-            return new(tree.Expression)(this.value.map(function (e) {
-                return e.eval(env);
-            }));
-        } else if (this.value.length === 1) {
-            return this.value[0].eval(env);
-        } else {
-            return this;
-        }
-    },
-    toCSS: function (env) {
-        return this.value.map(function (e) {
-            return e.toCSS(env);
-        }).join(' ');
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/import.js b/build-tools/lib/less/tree/import.js
deleted file mode 100644
index 427c1095..00000000
--- a/build-tools/lib/less/tree/import.js
+++ /dev/null
@@ -1,77 +0,0 @@
-(function (tree) {
-//
-// CSS @import node
-//
-// The general strategy here is that we don't want to wait
-// for the parsing to be completed, before we start importing
-// the file. That's because in the context of a browser,
-// most of the time will be spent waiting for the server to respond.
-//
-// On creation, we push the import path to our import queue, though
-// `import,push`, we also pass it a callback, which it'll call once
-// the file has been fetched, and parsed.
-//
-tree.Import = function (path, imports) {
-    var that = this;
-
-    this._path = path;
-
-    // The '.less' extension is optional
-    if (path instanceof tree.Quoted) {
-        this.path = /\.(le?|c)ss(\?.*)?$/.test(path.value) ? path.value : path.value + '.less';
-    } else {
-        this.path = path.value.value || path.value;
-    }
-
-    this.css = /css(\?.*)?$/.test(this.path);
-
-    // Only pre-compile .less files
-    if (! this.css) {
-        imports.push(this.path, function (root) {
-            if (! root) {
-                throw new(Error)("Error parsing " + that.path);
-            }
-            that.root = root;
-        });
-    }
-};
-
-//
-// The actual import node doesn't return anything, when converted to CSS.
-// The reason is that it's used at the evaluation stage, so that the rules
-// it imports can be treated like any other rules.
-//
-// In `eval`, we make sure all Import nodes get evaluated, recursively, so
-// we end up with a flat structure, which can easily be imported in the parent
-// ruleset.
-//
-tree.Import.prototype = {
-    toCSS: function () {
-        if (this.css) {
-            return "@import " + this._path.toCSS() + ';\n';
-        } else {
-            return "";
-        }
-    },
-    eval: function (env) {
-        var ruleset;
-
-        if (this.css) {
-            return this;
-        } else {
-            ruleset = new(tree.Ruleset)(null, this.root.rules.slice(0));
-
-            for (var i = 0; i < ruleset.rules.length; i++) {
-                if (ruleset.rules[i] instanceof tree.Import) {
-                    Array.prototype
-                         .splice
-                         .apply(ruleset.rules,
-                                [i, 1].concat(ruleset.rules[i].eval(env)));
-                }
-            }
-            return ruleset.rules;
-        }
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/javascript.js b/build-tools/lib/less/tree/javascript.js
deleted file mode 100644
index 4ec66b9e..00000000
--- a/build-tools/lib/less/tree/javascript.js
+++ /dev/null
@@ -1,51 +0,0 @@
-(function (tree) {
-
-tree.JavaScript = function (string, index, escaped) {
-    this.escaped = escaped;
-    this.expression = string;
-    this.index = index;
-};
-tree.JavaScript.prototype = {
-    eval: function (env) {
-        var result,
-            that = this,
-            context = {};
-
-        var expression = this.expression.replace(/@\{([\w-]+)\}/g, function (_, name) {
-            return tree.jsify(new(tree.Variable)('@' + name, that.index).eval(env));
-        });
-
-        try {
-            expression = new(Function)('return (' + expression + ')');
-        } catch (e) {
-            throw { message: "JavaScript evaluation error: `" + expression + "`" ,
-                    index: this.index };
-        }
-
-        for (var k in env.frames[0].variables()) {
-            context[k.slice(1)] = {
-                value: env.frames[0].variables()[k].value,
-                toJS: function () {
-                    return this.value.eval(env).toCSS();
-                }
-            };
-        }
-
-        try {
-            result = expression.call(context);
-        } catch (e) {
-            throw { message: "JavaScript evaluation error: '" + e.name + ': ' + e.message + "'" ,
-                    index: this.index };
-        }
-        if (typeof(result) === 'string') {
-            return new(tree.Quoted)('"' + result + '"', result, this.escaped, this.index);
-        } else if (Array.isArray(result)) {
-            return new(tree.Anonymous)(result.join(', '));
-        } else {
-            return new(tree.Anonymous)(result);
-        }
-    }
-};
-
-})(require('less/tree'));
-
diff --git a/build-tools/lib/less/tree/keyword.js b/build-tools/lib/less/tree/keyword.js
deleted file mode 100644
index a4431ba3..00000000
--- a/build-tools/lib/less/tree/keyword.js
+++ /dev/null
@@ -1,9 +0,0 @@
-(function (tree) {
-
-tree.Keyword = function (value) { this.value = value };
-tree.Keyword.prototype = {
-    eval: function () { return this },
-    toCSS: function () { return this.value }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/mixin.js b/build-tools/lib/less/tree/mixin.js
deleted file mode 100644
index 24cb8e4c..00000000
--- a/build-tools/lib/less/tree/mixin.js
+++ /dev/null
@@ -1,106 +0,0 @@
-(function (tree) {
-
-tree.mixin = {};
-tree.mixin.Call = function (elements, args, index) {
-    this.selector = new(tree.Selector)(elements);
-    this.arguments = args;
-    this.index = index;
-};
-tree.mixin.Call.prototype = {
-    eval: function (env) {
-        var mixins, args, rules = [], match = false;
-
-        for (var i = 0; i < env.frames.length; i++) {
-            if ((mixins = env.frames[i].find(this.selector)).length > 0) {
-                args = this.arguments && this.arguments.map(function (a) { return a.eval(env) });
-                for (var m = 0; m < mixins.length; m++) {
-                    if (mixins[m].match(args, env)) {
-                        try {
-                            Array.prototype.push.apply(
-                                  rules, mixins[m].eval(env, this.arguments).rules);
-                            match = true;
-                        } catch (e) {
-                            throw { message: e.message, index: e.index, stack: e.stack, call: this.index };
-                        }
-                    }
-                }
-                if (match) {
-                    return rules;
-                } else {
-                    throw { message: 'No matching definition was found for `' +
-                                      this.selector.toCSS().trim() + '('      +
-                                      this.arguments.map(function (a) {
-                                          return a.toCSS();
-                                      }).join(', ') + ")`",
-                            index:   this.index };
-                }
-            }
-        }
-        throw { message: this.selector.toCSS().trim() + " is undefined",
-                index: this.index };
-    }
-};
-
-tree.mixin.Definition = function (name, params, rules) {
-    this.name = name;
-    this.selectors = [new(tree.Selector)([new(tree.Element)(null, name)])];
-    this.params = params;
-    this.arity = params.length;
-    this.rules = rules;
-    this._lookups = {};
-    this.required = params.reduce(function (count, p) {
-        if (!p.name || (p.name && !p.value)) { return count + 1 }
-        else                                 { return count }
-    }, 0);
-    this.parent = tree.Ruleset.prototype;
-    this.frames = [];
-};
-tree.mixin.Definition.prototype = {
-    toCSS:     function ()     { return "" },
-    variable:  function (name) { return this.parent.variable.call(this, name) },
-    variables: function ()     { return this.parent.variables.call(this) },
-    find:      function ()     { return this.parent.find.apply(this, arguments) },
-    rulesets:  function ()     { return this.parent.rulesets.apply(this) },
-
-    eval: function (env, args) {
-        var frame = new(tree.Ruleset)(null, []), context, _arguments = [];
-
-        for (var i = 0, val; i < this.params.length; i++) {
-            if (this.params[i].name) {
-                if (val = (args && args[i]) || this.params[i].value) {
-                    frame.rules.unshift(new(tree.Rule)(this.params[i].name, val.eval(env)));
-                } else {
-                    throw { message: "wrong number of arguments for " + this.name +
-                            ' (' + args.length + ' for ' + this.arity + ')' };
-                }
-            }
-        }
-        for (var i = 0; i < Math.max(this.params.length, args && args.length); i++) {
-            _arguments.push(args[i] || this.params[i].value);
-        }
-        frame.rules.unshift(new(tree.Rule)('@arguments', new(tree.Expression)(_arguments).eval(env)));
-
-        return new(tree.Ruleset)(null, this.rules.slice(0)).eval({
-            frames: [this, frame].concat(this.frames, env.frames)
-        });
-    },
-    match: function (args, env) {
-        var argsLength = (args && args.length) || 0, len;
-
-        if (argsLength < this.required)                               { return false }
-        if ((this.required > 0) && (argsLength > this.params.length)) { return false }
-
-        len = Math.min(argsLength, this.arity);
-
-        for (var i = 0; i < len; i++) {
-            if (!this.params[i].name) {
-                if (args[i].eval(env).toCSS() != this.params[i].value.eval(env).toCSS()) {
-                    return false;
-                }
-            }
-        }
-        return true;
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/operation.js b/build-tools/lib/less/tree/operation.js
deleted file mode 100644
index d2e4d578..00000000
--- a/build-tools/lib/less/tree/operation.js
+++ /dev/null
@@ -1,32 +0,0 @@
-(function (tree) {
-
-tree.Operation = function (op, operands) {
-    this.op = op.trim();
-    this.operands = operands;
-};
-tree.Operation.prototype.eval = function (env) {
-    var a = this.operands[0].eval(env),
-        b = this.operands[1].eval(env),
-        temp;
-
-    if (a instanceof tree.Dimension && b instanceof tree.Color) {
-        if (this.op === '*' || this.op === '+') {
-            temp = b, b = a, a = temp;
-        } else {
-            throw { name: "OperationError",
-                    message: "Can't substract or divide a color from a number" };
-        }
-    }
-    return a.operate(this.op, b);
-};
-
-tree.operate = function (op, a, b) {
-    switch (op) {
-        case '+': return a + b;
-        case '-': return a - b;
-        case '*': return a * b;
-        case '/': return a / b;
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/quoted.js b/build-tools/lib/less/tree/quoted.js
deleted file mode 100644
index 6ddfa40f..00000000
--- a/build-tools/lib/less/tree/quoted.js
+++ /dev/null
@@ -1,29 +0,0 @@
-(function (tree) {
-
-tree.Quoted = function (str, content, escaped, i) {
-    this.escaped = escaped;
-    this.value = content || '';
-    this.quote = str.charAt(0);
-    this.index = i;
-};
-tree.Quoted.prototype = {
-    toCSS: function () {
-        if (this.escaped) {
-            return this.value;
-        } else {
-            return this.quote + this.value + this.quote;
-        }
-    },
-    eval: function (env) {
-        var that = this;
-        var value = this.value.replace(/`([^`]+)`/g, function (_, exp) {
-            return new(tree.JavaScript)(exp, that.index, true).eval(env).value;
-        }).replace(/@\{([\w-]+)\}/g, function (_, name) {
-            var v = new(tree.Variable)('@' + name, that.index).eval(env);
-            return v.value || v.toCSS();
-        });
-        return new(tree.Quoted)(this.quote + value + this.quote, value, this.escaped, this.index);
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/rule.js b/build-tools/lib/less/tree/rule.js
deleted file mode 100644
index 18cc49bf..00000000
--- a/build-tools/lib/less/tree/rule.js
+++ /dev/null
@@ -1,38 +0,0 @@
-(function (tree) {
-
-tree.Rule = function (name, value, important, index) {
-    this.name = name;
-    this.value = (value instanceof tree.Value) ? value : new(tree.Value)([value]);
-    this.important = important ? ' ' + important.trim() : '';
-    this.index = index;
-
-    if (name.charAt(0) === '@') {
-        this.variable = true;
-    } else { this.variable = false }
-};
-tree.Rule.prototype.toCSS = function (env) {
-    if (this.variable) { return "" }
-    else {
-        return this.name + (env.compress ? ':' : ': ') +
-               this.value.toCSS(env) +
-               this.important + ";";
-    }
-};
-
-tree.Rule.prototype.eval = function (context) {
-    return new(tree.Rule)(this.name, this.value.eval(context), this.important, this.index);
-};
-
-tree.Shorthand = function (a, b) {
-    this.a = a;
-    this.b = b;
-};
-
-tree.Shorthand.prototype = {
-    toCSS: function (env) {
-        return this.a.toCSS(env) + "/" + this.b.toCSS(env);
-    },
-    eval: function () { return this }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/ruleset.js b/build-tools/lib/less/tree/ruleset.js
deleted file mode 100644
index cc9a60ae..00000000
--- a/build-tools/lib/less/tree/ruleset.js
+++ /dev/null
@@ -1,212 +0,0 @@
-(function (tree) {
-
-tree.Ruleset = function (selectors, rules) {
-    this.selectors = selectors;
-    this.rules = rules;
-    this._lookups = {};
-};
-tree.Ruleset.prototype = {
-    eval: function (env) {
-        var ruleset = new(tree.Ruleset)(this.selectors, this.rules.slice(0));
-
-        ruleset.root = this.root;
-
-        // push the current ruleset to the frames stack
-        env.frames.unshift(ruleset);
-
-        // Evaluate imports
-        if (ruleset.root) {
-            for (var i = 0; i < ruleset.rules.length; i++) {
-                if (ruleset.rules[i] instanceof tree.Import) {
-                    Array.prototype.splice
-                         .apply(ruleset.rules, [i, 1].concat(ruleset.rules[i].eval(env)));
-                }
-            }
-        }
-
-        // Store the frames around mixin definitions,
-        // so they can be evaluated like closures when the time comes.
-        for (var i = 0; i < ruleset.rules.length; i++) {
-            if (ruleset.rules[i] instanceof tree.mixin.Definition) {
-                ruleset.rules[i].frames = env.frames.slice(0);
-            }
-        }
-
-        // Evaluate mixin calls.
-        for (var i = 0; i < ruleset.rules.length; i++) {
-            if (ruleset.rules[i] instanceof tree.mixin.Call) {
-                Array.prototype.splice
-                     .apply(ruleset.rules, [i, 1].concat(ruleset.rules[i].eval(env)));
-            }
-        }
-
-        // Evaluate everything else
-        for (var i = 0, rule; i < ruleset.rules.length; i++) {
-            rule = ruleset.rules[i];
-
-            if (! (rule instanceof tree.mixin.Definition)) {
-                ruleset.rules[i] = rule.eval ? rule.eval(env) : rule;
-            }
-        }
-
-        // Pop the stack
-        env.frames.shift();
-
-        return ruleset;
-    },
-    match: function (args) {
-        return !args || args.length === 0;
-    },
-    variables: function () {
-        if (this._variables) { return this._variables }
-        else {
-            return this._variables = this.rules.reduce(function (hash, r) {
-                if (r instanceof tree.Rule && r.variable === true) {
-                    hash[r.name] = r;
-                }
-                return hash;
-            }, {});
-        }
-    },
-    variable: function (name) {
-        return this.variables()[name];
-    },
-    rulesets: function () {
-        if (this._rulesets) { return this._rulesets }
-        else {
-            return this._rulesets = this.rules.filter(function (r) {
-                return (r instanceof tree.Ruleset) || (r instanceof tree.mixin.Definition);
-            });
-        }
-    },
-    find: function (selector, self) {
-        self = self || this;
-        var rules = [], rule, match,
-            key = selector.toCSS();
-
-        if (key in this._lookups) { return this._lookups[key] }
-
-        this.rulesets().forEach(function (rule) {
-            if (rule !== self) {
-                for (var j = 0; j < rule.selectors.length; j++) {
-                    if (match = selector.match(rule.selectors[j])) {
-                        if (selector.elements.length > rule.selectors[j].elements.length) {
-                            Array.prototype.push.apply(rules, rule.find(
-                                new(tree.Selector)(selector.elements.slice(1)), self));
-                        } else {
-                            rules.push(rule);
-                        }
-                        break;
-                    }
-                }
-            }
-        });
-        return this._lookups[key] = rules;
-    },
-    //
-    // Entry point for code generation
-    //
-    //     `context` holds an array of arrays.
-    //
-    toCSS: function (context, env) {
-        var css = [],      // The CSS output
-            rules = [],    // node.Rule instances
-            rulesets = [], // node.Ruleset instances
-            paths = [],    // Current selectors
-            selector,      // The fully rendered selector
-            rule;
-
-        if (! this.root) {
-            if (context.length === 0) {
-                paths = this.selectors.map(function (s) { return [s] });
-            } else {
-                this.joinSelectors( paths, context, this.selectors );
-            }
-        }
-
-        // Compile rules and rulesets
-        for (var i = 0; i < this.rules.length; i++) {
-            rule = this.rules[i];
-
-            if (rule.rules || (rule instanceof tree.Directive)) {
-                rulesets.push(rule.toCSS(paths, env));
-            } else if (rule instanceof tree.Comment) {
-                if (!rule.silent) {
-                    if (this.root) {
-                        rulesets.push(rule.toCSS(env));
-                    } else {
-                        rules.push(rule.toCSS(env));
-                    }
-                }
-            } else {
-                if (rule.toCSS && !rule.variable) {
-                    rules.push(rule.toCSS(env));
-                } else if (rule.value && !rule.variable) {
-                    rules.push(rule.value.toString());
-                }
-            }
-        } 
-
-        rulesets = rulesets.join('');
-
-        // If this is the root node, we don't render
-        // a selector, or {}.
-        // Otherwise, only output if this ruleset has rules.
-        if (this.root) {
-            css.push(rules.join(env.compress ? '' : '\n'));
-        } else {
-            if (rules.length > 0) {
-                selector = paths.map(function (p) {
-                    return p.map(function (s) {
-                        return s.toCSS(env);
-                    }).join('').trim();
-                }).join(env.compress ? ',' : (paths.length > 3 ? ',\n' : ', '));
-                css.push(selector,
-                        (env.compress ? '{' : ' {\n  ') +
-                        rules.join(env.compress ? '' : '\n  ') +
-                        (env.compress ? '}' : '\n}\n'));
-            }
-        }
-        css.push(rulesets);
-
-        return css.join('') + (env.compress ? '\n' : '');
-    },
-
-    joinSelectors: function (paths, context, selectors) {
-        for (var s = 0; s < selectors.length; s++) {
-            this.joinSelector(paths, context, selectors[s]);
-        }
-    },
-
-    joinSelector: function (paths, context, selector) {
-        var before = [], after = [], beforeElements = [],
-            afterElements = [], hasParentSelector = false, el;
-
-        for (var i = 0; i < selector.elements.length; i++) {
-            el = selector.elements[i];
-            if (el.combinator.value[0] === '&') {
-                hasParentSelector = true;
-            }
-            if (hasParentSelector) afterElements.push(el);
-            else                   beforeElements.push(el);
-        }
-
-        if (! hasParentSelector) {
-            afterElements = beforeElements;
-            beforeElements = [];
-        }
-
-        if (beforeElements.length > 0) {
-            before.push(new(tree.Selector)(beforeElements));
-        }
-
-        if (afterElements.length > 0) {
-            after.push(new(tree.Selector)(afterElements));
-        }
-
-        for (var c = 0; c < context.length; c++) {
-            paths.push(before.concat(context[c]).concat(after));
-        }
-    }
-};
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/selector.js b/build-tools/lib/less/tree/selector.js
deleted file mode 100644
index ddc68426..00000000
--- a/build-tools/lib/less/tree/selector.js
+++ /dev/null
@@ -1,42 +0,0 @@
-(function (tree) {
-
-tree.Selector = function (elements) {
-    this.elements = elements;
-    if (this.elements[0].combinator.value === "") {
-        this.elements[0].combinator.value = ' ';
-    }
-};
-tree.Selector.prototype.match = function (other) {
-    var value = this.elements[0].value,
-        len   = this.elements.length,
-        olen  = other.elements.length;
-
-    if (len > olen) {
-        return value === other.elements[0].value;
-    }
-
-    for (var i = 0; i < olen; i ++) {
-        if (value === other.elements[i].value) {
-            for (var j = 1; j < len; j ++) {
-                if (this.elements[j].value !== other.elements[i + j].value) {
-                    return false;
-                }
-            }
-            return true;
-        }
-    }
-    return false;
-};
-tree.Selector.prototype.toCSS = function (env) {
-    if (this._css) { return this._css }
-
-    return this._css = this.elements.map(function (e) {
-        if (typeof(e) === 'string') {
-            return ' ' + e.trim();
-        } else {
-            return e.toCSS(env);
-        }
-    }).join('');
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/url.js b/build-tools/lib/less/tree/url.js
deleted file mode 100644
index f427070a..00000000
--- a/build-tools/lib/less/tree/url.js
+++ /dev/null
@@ -1,25 +0,0 @@
-(function (tree) {
-
-tree.URL = function (val, paths) {
-    if (val.data) {
-        this.attrs = val;
-    } else {
-        // Add the base path if the URL is relative and we are in the browser
-        if (!/^(?:https?:\/|file:\/|data:\/)?\//.test(val.value) && paths.length > 0 && typeof(window) !== 'undefined') {
-            val.value = paths[0] + (val.value.charAt(0) === '/' ? val.value.slice(1) : val.value);
-        }
-        this.value = val;
-        this.paths = paths;
-    }
-};
-tree.URL.prototype = {
-    toCSS: function () {
-        return "url(" + (this.attrs ? 'data:' + this.attrs.mime + this.attrs.charset + this.attrs.base64 + this.attrs.data
-                                    : this.value.toCSS()) + ")";
-    },
-    eval: function (ctx) {
-        return this.attrs ? this : new(tree.URL)(this.value.eval(ctx), this.paths);
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/value.js b/build-tools/lib/less/tree/value.js
deleted file mode 100644
index 922096cd..00000000
--- a/build-tools/lib/less/tree/value.js
+++ /dev/null
@@ -1,24 +0,0 @@
-(function (tree) {
-
-tree.Value = function (value) {
-    this.value = value;
-    this.is = 'value';
-};
-tree.Value.prototype = {
-    eval: function (env) {
-        if (this.value.length === 1) {
-            return this.value[0].eval(env);
-        } else {
-            return new(tree.Value)(this.value.map(function (v) {
-                return v.eval(env);
-            }));
-        }
-    },
-    toCSS: function (env) {
-        return this.value.map(function (e) {
-            return e.toCSS(env);
-        }).join(env.compress ? ',' : ', ');
-    }
-};
-
-})(require('less/tree'));
diff --git a/build-tools/lib/less/tree/variable.js b/build-tools/lib/less/tree/variable.js
deleted file mode 100644
index 10f7c084..00000000
--- a/build-tools/lib/less/tree/variable.js
+++ /dev/null
@@ -1,24 +0,0 @@
-(function (tree) {
-
-tree.Variable = function (name, index) { this.name = name, this.index = index };
-tree.Variable.prototype = {
-    eval: function (env) {
-        var variable, v, name = this.name;
-
-        if (name.indexOf('@@') == 0) {
-            name = '@' + new(tree.Variable)(name.slice(1)).eval(env).value;
-        }
-
-        if (variable = tree.find(env.frames, function (frame) {
-            if (v = frame.variable(name)) {
-                return v.value.eval(env);
-            }
-        })) { return variable }
-        else {
-            throw { message: "variable " + name + " is undefined",
-                    index: this.index };
-        }
-    }
-};
-
-})(require('less/tree'));