1. Use a pin icon for pin/unpin actions.
2. Allow 'My Music', etc, to be collapsed.
3. Add dynamic playlists entry to menus.
4. Move player controls in mobile now-playing if very wide.
5. Add toolbar button in desktop layout to show large now-playing info (same as mobile layout).
6. Fix info icon changing to play/pause in mobile layout when info shown.
7. When setting progress bar position, check that curent song duration and time are not 'undefined'