[MOVED] Extract user migration out of iOS specific codebase.
[UPDATED] iCloud persistence manager.
[ADDED] Mac: Hotkey for signing the user out.
[IMPROVED] Mac: Menu item handling and usability.
[REMOVED] OS X: Disabled ability to add new sites from OS X until I
have time to implement it properly without causing
duplicates etc.
[MOVED] iCloud and Core Data support was centralised to iOS and OS X
to make sure both platforms always use the same container
configuration.
[FIXED] iCloud sync problems.
[REMOVED] iCloud KV is not used/needed.
