(cherry picked from commit 15c7907c)

(cherry picked from commit 31b830cd)

(cherry picked from commit 29bb59ad)

(cherry picked from commit fbd205af)

this fixes opening any subtitles format as well as a handful of audio and video formats from third party apps

(cherry picked from commit e015547e)

(cherry picked from commit 154031c7)

(cherry picked from commit 77f2355c)
Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

(cherry picked from commit 4ef903a6)
Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

(cherry picked from commit 4672a88d)

(cherry picked from commit 814faecc)

(cherry picked from commit 63081a97)

(cherry picked from commit 44ec83df)

(cherry picked from commit a8b1544f)

(cherry picked from commit d301d16a)

(cherry picked from commit 5c6cd73a)

(cherry picked from commit 9e0c6135)

(cherry picked from commit 7a82cd2d)

(cherry picked from commit 629c7f10)

(cherry picked from commit 9ced6556)

(cherry picked from commit 0463fd4d)

Introduce new VLCPlayerDisplayController class which is responsible to show/hide the full screen and mini player
remove playback view related stuff from VLCAppDelegate and VLCPlaylistViewController
add notifications for playback state changes, so more objects than just the VLCPlaybackControllerDelegate can react to playback state and meta data changes

(cherry picked from commit aa52c9a1)

(cherry picked from commit 3b460694)

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

(cherry picked from commit 6ad86e2a)

(cherry picked from commit 769867c8)

(cherry picked from commit 565cca09)

(cherry picked from commit 9c09939f)

(cherry picked from commit ca10e595)

(cherry picked from commit b334aa4a)

movie view: correctly update brightness slider when screen brightness is changed by the user through a OS provided way

(cherry picked from commit dfd21ae9)

(cherry picked from commit afa7c7f2)

cleanup

(cherry picked from commit 4b3cc441)