Merge remote-tracking branch 'remotes/origin/MP1-4102-BUG_Crash_on_startup_check_for_TV_service'
MP1-4108 : Fix debug filter building (MPIPTV)
MP1-4090 : Fix Thumbnail check without path (It will solve Trakt and third party plugins on '#selectedthumb' in skin.) Cleanup code and fix leftover temp generated thumb files.
MP1-2531 : Toggle Full Screen is inconsistent in music
Merge remote-tracking branch 'remotes/origin/BUG_4449_Music_toggle_fullscreen'

Conflicts:
	mediaportal/MediaPortal.Application/MediaPortal.cs