Add Previous & Next buttons to VideoPlayer OSD.
Currently/Next Playing debug overlay for Tobias.

Works for Music & Video.
Making Menus Show / Hide with proper System definitions
Hacky debugging home list for Play Queue. Go Tobias!
Reverting previous hack, let's start by checking visibility.

Should see corresponding play queue title(s) when any of the lists
11005, 11006 or 11007 are visible.
Implement home play queue list, first step.

Music alone works, needs video & photos for tweaking into final form.
Merge pull request #1088 from RasPlex/PR-ShutDown

Making Menus Show / Hide with proper System definitions
Cleanup of DVDFactoryDemux/InputStream
Fix playQueue URL.
Style fixes.
Adding ratingKey or playQueueItemID as dbID

This allows us to jump directly to them when playing our playlist.
Added support for DELETE in PlexDirectory

This was needed for removing items in the PlayQueue
Split PlexContentPlayerMixin into header/source.

Also make it use PlayQueues when appropriate.
Fix some include files after last commit
Style fix.
Added FindFromItem that takes a const ref

So we don’t have to convert our CFileItem& to a shared_ptr just to call
this method.
Added removeItemFromCurrentPlayQueue

This makes it possible to delete stuff from the PlayQueue
Set currentPlayQueueItem property for items in the PlayQueue
WindowHome implementation of PlayQueues

You can now jump to items in the PlayQueue
Remove them from the PlayQueue with the context menu

I also took the opportunity to clean up the OnPopupMenu method in
GUIWindowHome that was so very long and complex.
Merge remote-tracking branch 'plex-skin/playlist' into frodo