Added Content manager
Merge branch 'Sprint-3-' of https://github.com/aptara/AdvantexeAdminPortal into Sushil

Conflicts:
	Advantexe.Protal.v11.suo
	Web/bin/Advantexe.Admin.Portal.dll
	Web/bin/Advantexe.Admin.Portal.pdb
	Web/obj/Debug/Advantexe.Admin.Portal.csproj.FileListAbsolute.txt
	Web/obj/Debug/Advantexe.Admin.Portal.dll
	Web/obj/Debug/Advantexe.Admin.Portal.pdb
Added Content Entity