Moved ContentViewer from TomahawkApp to TomahawkMainActivity.
Made several classes Singletons. Complete new referencing scheme.
Refactored ContentViewer. Use standard backstack manager. Optimize adapters.
Don't resize images in playback view in portrait mode.
Moved libspotify wrapper to service in an external process.
Don't cache UserPlaylists in memory. Lazy load from db? Yes, please!
OnResolved in SpotifyResolver should run asynchronously.
Always call resolveVisibleQueries in TomahawkFragment asynchronously.
Always show playlist's artist images (async ofc :>).
Optimized case-insensitive containsString method.
Optimized buildImagePath in TOmahawkUtils.