fixed UI test and updated FeatherSetup script
edited UI test arrangement
fixed UI test server tear down
New arrangents for the selector UI test
Merge branch 'master' to 'ContentSelector' of https://github.com/Sitefinity/feather

Conflicts:
	Tests/Telerik.Sitefinity.Frontend.TestUI.Arrangements/ResourcePackages/AddNewLayoutFileToDefaultPackage.cs
Added new integration test; Common methods are moved to TestUtilities
Merge branch 'master' of https://github.com/Sitefinity/feather

Conflicts:
	Tests/Telerik.Sitefinity.Frontend.TestUI.Arrangements/ResourcePackages/AddNewLayoutFileToDefaultPackage.cs
fixed broken build
fixed broken build
fixed UI test arrangement
Updated feather setup script for UI tests
Merge branch 'master' into ServerContextHandler