Simplifying Address.FullName so that auto INPC works without workaround.
Added save feature.
Merge branch 'initial'

Conflicts:
	SimpleContactManager/ContactControl.xaml.cs
	SimpleContactManager/Entities/Address.cs
	SimpleContactManager/Entities/Contact.cs
	SimpleContactManager/Entities/Entity.cs
	SimpleContactManager/Entities/RootEntity.cs
	SimpleContactManager/MainWindow.cs
	SimpleContactManager/MainWindow.xaml
Updated to latest PostSharp and finalized code.