2.28.2:
* Movie Player:
  - Fix possible crash on exit when using Python plugins
  - Fix warning when displaying file tooltip in the playlist
  - Fix help links not showing up in error messages
  - Fix "disabling screensaver when audio is playing" checkbox
    never turning off (or on)
  - Fix play order when removing currently playing song

* Web browser plugin:
  - Fix screensaver not being stopped when playing movies
  - Fix parsing of playlist files when using WebKit
  - Add support for midi files

* GStreamer backend:
  - Fix possible hang on startup
  - Fix DVB channels file not being detected properly
  - Fix warning when creating a screenshot
  - Use cubic volumes when PulseAudio is used
  - Fix intermittent pixel-aspect-ratio warnings