#187 Add new MVC UI project, and replace WinRTUI project style with the new hub approach.

Also update the SL async Bcl libraries to current.
Add non-functional MVC 5 UI experimental code.
Merge remote-tracking branch 'origin/ProjectTrackerWin81'

Conflicts:
	Samples/NET/cs/ProjectTracker/WcfAppServer/App_Data/PTracker.mdf
	Samples/NET/cs/ProjectTracker/WcfAppServer/App_Data/PTracker_log.LDF
	Samples/NET/cs/ProjectTracker/WcfAppServer/App_Data/aspnetdb.mdf
	Samples/NET/cs/ProjectTracker/WcfAppServer/App_Data/aspnetdb_log.ldf