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' of https://github.com/Sitefinity/feather into ContentSelector