Major changes in 3.14.2:
- Stop thumbnailing when starting playback
- Keep the controls visible when seeking with the slider
- Show popup when seeking with the keyboard
- Only show videos longer than 5 seconds
- Hide source which provide torrent URLs
- Fix translation support in thumbnailer
- Fix Totem doubling files added on the cmd line
- Handle "Powerpoint" buttons on remotes
- Remove spacing around preferences tabs