Implement drag and drop for .m3u playlists
Merge branch 'master' of github.com:badescunicu/mixxx into drag_and_drop
Support for .pls and .m3u8 extensions
A bit of coding style improvement
Merge pull request #87 from badescunicu/drag_and_drop

Drag and drop m3u playlist into sidebar
Merge remote-tracking branch 'upstream/master' into features_loop_recorder