fix crash when changing language from non-GUI thread (fixes #15113)
fix crash when changing the skin zoom from non-GUI thread (fixes #15114)
changed: Don't try to sort subtitles, it screws up eg. sync priority
Merge pull request #4560 from arnova/sub_nosort

changed: Don't try to sort subtitles, it screws up eg. sync priority
Merge pull request #4551 from Montellese/settings_language_fix

fix crash when changing language from non-GUI thread (fixes #15113)