Changes and fixes to comply the requirements of the official XBMC Add-ons repository.
Added an option to choose Trailers addon.
Added Movie Sets indicators to Slide, Gallery & Banner view
Bugfixes
Changed some weird translated XBMC core based strings to skin based.
Fixed the "Music Button opens..." problem when you change language.
Code cleaning.
Code cleaning.
Added new ListWall view based on the original concept.
Animation tweeks for the new ListWall view.
More tweeks for the new ListWall view.
Merge remote-tracking branch 'upstream/master' into develop