(+) Added WIN81 versions of the Core and MVVM projects.
(*) Fixed output paths for WIN81 projects for x86 and x64 platforms.
(*) Removed unsupported projects from Catel.VS2013.sln.
(*) Removed dublicate files from WIN81 Core and MVVM projects. Linked from WIN80 ones.
(*) Fixed CTL-146 (WinRT controls DependencyProperies are not Fields anymore but Properties).
(*) Working on CTL-142 (Support WIN81 platform): Implemented custom TargetControl.DataContextChanged event handler in LogicBase class (WIN81 only).
Merge pull request #11 from Taggersoft/feature/win81

Feature/win81