1. Fix parsing of BBC Sounds error response.
2. Revert webapp manifest back to "standalone" as some users report issues with "fullscreen"
3. Use composer, conductor, band, etc, in window titlebar as per elsewhere.
4. Set HTML meta theme-color to botton toolbar colour.
5. Fix incorrectly treating LMS icon strings as Material icons.
6. Only show zoom and fullscreen buttons in image view for desktop devices.
7. Use LMS method to retrieve complete favourites listing.