1. Don't show command in popup error messages.
2. When editing queue, and auto-scroll is enabled, don't scroll unless current track index changes.
3. Speed up initial page load, by not 'mounting' dialogs (settings, sync, etc.) until required.
4. Minify code for releases.
5. Don't add add/play-all buttons for A..Z groups.
6. Fix changing layout in settings.
7. Show spinner when click text items, as these may fetch items.
8. Only show "Artist or albums" prompt for top-level genre listing.
9. Handle BBC iPlayer streams duration change.
10. Stop drag'n'drop scrolling when reach top/bottom of list.