Included a library to enable a slide-up playback view panel.
Improved method to generate a lifetime unique string id.
Collapse slideUpLayout onBackPressed.
Correctly hide/show playPauseButton in slide up panel.
Fixed landscape layout for the new playback slide up panel.
Only show PlaybackFragment menu items when slide up panel expanded.
Show the correct action bar title when sliding layout expanded/collapsed
Collapse slide up panel if new fragment is shown
Implemented new playback queue system.
Fixes regarding the slide up panel (click/slide stuff).
Fixes regarding the queue implementation in PlaybackService.
Some more queue related fixes.
Added return button to get back to currently playing tracklist.
Fixed NPE in PlaybackService#onInfoSystemResultsReported()