1. Ignore click events on 'Music sources' for first 750ms after back button is clicked - to try to prevent search being shown on back long/short click.
2. Don't bind 'Ctrl+C' for add favourite/podcast, this conflicts with 'Copy', should have been using 'Ctrl+Shift+C'
3. Use primary, not accent, colour for active navbar with light themes.
4. Attempt to handle errors thrown by decodeURIComponent()
5. Fix 'Add to playlist' not showing in subtoolbar when select items of multi-disc albums.
6. Refresh playlist when add items.