Further cleanup of media views

Please review the proposed changes.  

The main changes on the video side were to bring the views in line with the current documented button IDs here: http://wiki.xbmc.org/index.php?title=List_of_Built_In_Controls#MyVideoNav.xml  The main issue was with button ID 2 being used for the trailer controls I believe.

The changes to the audio side brought the view and library controls to the left side blade, similar to the video view.  I believe this lends itself to a more consistent navigation feel in the skin (versus having differing menu options on the video and music sides).