kawaii-player-v2.8.0-0

1. better handling of fetching episode summary from tvdb
2. allow editing episode summary in summary box
3. summary tooltip added to thumbnail grid
4. keyboard shortcuts added for renaming to default
5. keyboard shortcuts added for fetching episode summary
6. more options added to context menu of playlist
7. separate meta_engine
8. tmdb bug fixed
9. a new command ytq: added, for quick casting of ytdl and torrent links from web interface
10. Support added for opening links to ytdl supported sites
11. Internal browser can be used for ytdl supported sites
12. default background image changed