Cleanup lefterovers from refactoring
Removed BadMechanics.PristineEdit.Common.Interfaces project and moved the interfaces into BadMechanics.PristineEdit.Common.Interfaces.Data
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Desktop Client/Source/BadMechanics.PristineEdit.Win32.Data/Services/Win32FileService.cs
	Desktop Client/Source/BadMechanics.PristineEdit.Win32.DesktopClient/ViewModels/FileDialogViewModel.cs