Add documentation and change the playlist dbclick
Add documentation and change the playlist dbclick

Double click will now first check if the current playlist as equal to
the clicked song

dirkgroenen/mopidy-mopify,dbrgn/mopidy-mopify,dbrgn/mopidy-mopify,dirkgroenen/mopidy-mopify,dirkgroenen/mopidy-mopify,dbrgn/mopidy-mopify