Run multiple UI tests without restarting ControlGallery (#539)

* Allow UI tests to bypass "manual" navigation to isses pages

* Add missing Preserve attribute

* Make Issue198 test work with direct navigation

* Remove empty UI tests

* Fix error handling for iOS

* Use navigation which works for subsequent TestNavigationPages on iOS

* Fix race condition in 39530 test
Remove master page nesting when doing direct nav for UI tests

* Set up and run a single instance of Control Gallery for UI tests

* Force NavigateToIssue to wait for main page appearing to deal with iOS timing

* Move remaining UI tests into Issues namespace

* Change the connection check URL so it'll work on iOS

* Make Appearing Gallery tests work without restarting app

* Prevent ContextActions tests from stepping on each other

* Make context menu test more robust

* Move ButtonExtensions back to Controls namespace

* Have test 774 dismiss the action sheet before ending

* Update UITest package to 2.0.0 stable

* Make 2948 restore orientation when it's done

* Null check on PageController before calling SendDisappearing

* Adding a wait for the root page in the core tests

* Add consecutive tests reset to prevent memory slog on older iOS devices

3 files changed, 10 insertions, 7 deletions

diff --git a/Xamarin.Forms.Core.iOS.UITests/Tests/AppearingUITests.cs b/Xamarin.Forms.Core.iOS.UITests/Tests/AppearingUITests.cs
index 4b37ea9f..1e624611 100644
--- a/Xamarin.Forms.Core.iOS.UITests/Tests/AppearingUITests.cs
+++ b/Xamarin.Forms.Core.iOS.UITests/Tests/AppearingUITests.cs
@@ -6,9 +6,8 @@ namespace Xamarin.Forms.Core.UITests
 	[Category(UITestCategories.LifeCycle)]
 	internal class AppearingUITests : BaseTestFixture
 	{
-		public AppearingUITests ()
+		public AppearingUITests()
 		{
-			ShouldResetPerFixture = false;
 		}
 
 		protected override void NavigateToGallery ()
@@ -16,6 +15,13 @@ namespace Xamarin.Forms.Core.UITests
 			App.NavigateToGallery (GalleryQueries.AppearingGallery);
 		}
 
+		protected override void TestTearDown()
+		{
+			base.TestTearDown();
+			ResetApp();
+			NavigateToGallery();
+		}
+
 		[Test]
 		public void AppearingNavigationPage ()
 		{
diff --git a/Xamarin.Forms.Core.iOS.UITests/Tests/ContextActionsUITests.cs b/Xamarin.Forms.Core.iOS.UITests/Tests/ContextActionsUITests.cs
index a3ae1063..d681d476 100644
--- a/Xamarin.Forms.Core.iOS.UITests/Tests/ContextActionsUITests.cs
+++ b/Xamarin.Forms.Core.iOS.UITests/Tests/ContextActionsUITests.cs
@@ -16,7 +16,6 @@ namespace Xamarin.Forms.Core.UITests
 
 		public ContextActionsListUITests ()
 		{
-			ShouldResetPerFixture = false;
 		}
 
 		protected override void NavigateToGallery ()
@@ -46,12 +45,12 @@ namespace Xamarin.Forms.Core.UITests
 		public void ContextActionsDelete ()
 		{
 			// mark is an icon on android
-			App.TouchAndHold (q => q.Marked (cell0));
+			App.TouchAndHold (q => q.Marked (cell1));
 			App.WaitForElement (q => q.Marked (delete));
 			App.Screenshot ("I have actions!");
 
 			App.Tap (q => q.Marked (delete));
-			App.WaitForNoElement (q => q.Marked (cell0));
+			App.WaitForNoElement (q => q.Marked (cell1));
 			App.Screenshot ("Deleted cell 0");
 		}
 #endif
@@ -89,7 +88,6 @@ namespace Xamarin.Forms.Core.UITests
 	{
 		public ContextActionsTableUITests ()
 		{
-			ShouldResetPerFixture = false;
 		}
 
 		protected override void NavigateToGallery ()
diff --git a/Xamarin.Forms.Core.iOS.UITests/Tests/Legacy-UnevenListTests.cs b/Xamarin.Forms.Core.iOS.UITests/Tests/Legacy-UnevenListTests.cs
index 86a39ad3..7e0cebf1 100644
--- a/Xamarin.Forms.Core.iOS.UITests/Tests/Legacy-UnevenListTests.cs
+++ b/Xamarin.Forms.Core.iOS.UITests/Tests/Legacy-UnevenListTests.cs
@@ -10,7 +10,6 @@ namespace Xamarin.Forms.Core.UITests
 	{
 		public UnevenListTests ()
 		{
-			ShouldResetPerFixture = false;
 		}
 
 		protected override void NavigateToGallery ()