1.5.1

1. Fix 'Play all' and 'Play next' from header.
2. Don't hide 'Interface' from server settings, just hide some options.
3. Fix icon mapping of some icons.
4. Hide jumplist when showing Artists/Album/etc. selection of genre.
5. When listing for Artists, Composers, or Conductors of a genre ask for textkey.
6. Fix colour of active jumplist item.
7. Map application icons to symbolic icons.
8. Show volume overlay when use keyboard to change volume.
9. If a list of items has some with, and some without, images then don't assign a blank image to those without.
10. Fix SVG icons when in grid.
11. Dim some buttons if nothing in queue, or no player conected.
12. Fix rating not showing unless 'landscape'
13. Update translations.
14. Add Danish translation - thanks to Jens Svalgaard Kohrt
15. Only use browser's language setting if it starts with 'en'
16. Add 'Random Albums' choice when listing a genre.
17. Artist/album actions are queired synchronously, so check recieved response is for the current item.
18. Add emblems to artist images.
19. Allow drag'n'drop from file manager onto play queue.