bugfix: remove b prefix
bugfix: content-type now 'application/json'
Merge branch 'backend' into develop -- minor bugfixes
bugfix: return actual track name
return something meaningful as title (media resource locator)
bugfix: return actual audio/subtitle track name
play/pause/stop and jumping to a position implemented
Merge branch 'backend' into develop - play, pause, stop, seek
Merge branch 'frontend-rewrite' into develop

working buttons
Merge branch 'develop' into frontend-rewrite