Ask the player which subtitle stream is played.
Store the selected subtitle index in CApplicationPlayer::SetSubtitle and nowhere else.
Ask the player if subtitles are visible.
Store the selected subtitle index in CApplicationPlayer::SetSubtitle and nowhere else.
only force visibility of subtitle if NOT available from saved DVD navigator state
don't overwrite player subtitle visibility status with videosetting
Merge pull request #5003 from Voyager1/subs-pr-fix

Store subtitle settings only on user action - replacing #4981