5.5.0

1. If using Lyrion theme and colour from cover, then default to green highlight.
2. Add option to show home-screen shortcuts in navigation drawer.
3. Allow smaller grid items if screen 350px or less.
4. Scale grid icons by grid size.
5. If viewing images from browse then allow swiping left/right to view prev/next images.
6. Add button, shown on hover, to view images.
7. Add play/add/insert/shuffle buttons when viewing some images.
8. Add captions to images in viewer.
9. Only show detailed sub-toolbar for online items if also have space for image.
10. If using rounded covers then use circles for artist images.
11. Support plural/singular user-defined role names.
12. Fix showing 'composed by', etc., in queue and elsewhere.
13. Fix showing/hiding of 'Play shuffled' action in certain cases.
14. Fix 'Bookmarks' plugin.
15. Only use detailed sub-toolbar if wide enough for cover or have text for at least one of bottom 2 lines.