Use a richer miniplayer interface

[paced]

It looks fine now but It could be better.

• [ ] Liking a song should be one-click, not two. Add a button for "like".
• [ ] Then, the "add song" button can be an "add playlist" icon instead of a plus symbol.
• [ ] Add the ability to toggle repeat.

In summary, there are now four buttons. From left, right, top to bottom:

• Shuffle.
• Repeat.
• Back.
• Pause/play.
• Next.
• Like.
• Add to Playlist.

It will be reasonably difficult to add a volume selector or "connect to device" button. Still, it could be considered for a different ticket. I'll do this first, and consider other tickets raised by others before I try to raise it myself.