TODOs

- RSS Finder tab dead after subscribing
- RSS Finder Youtube channel subscribing with "Subscribe" does subscribe without query string
- RSS Finder lädt viel zu langsam
- RSS Finder sollte im selben Tab erneut öffnen
- sync pane fix changes to 1.9x
- bad (missing) right margin for images/videos/...
- bad (missing) bottom margin for videos/audio/youtube embed