Added callbacks to call playNext() on player controller when a song ends for soundcloud or youtube
Added functions ng-click to make the player buttons work.
Fixed bug queue not playing the first song
Fixed bug not updating player song title when playNext() was getting called from the player helpers
Swapping play/pause button now working
Enhanced player logic
Merge branch 'player' into dev
Hided youtube video
Merge pull request #56 from deini/dev

Buttons are now working and on song end callback is fixed