1. Fix position of play/pause and stop button in mobile layout when stop button is enabled.
2. Landscape layout for mobile now playing.
3. Handle muted players; show speaker icon with line through, toggle mute with long press on icon.
4. Fix reading default album sort values from server.
5. Reduce CPU usage duting playback by using HTML5 progressbar not v-slider.
6. Add options to control drawing of background.
7. Make display of technical info optional, and disabled by default.
8. Disable now playing background by default.