5.8.2

1. Translation updates.
2. Add context-menu to player name in main toolbar.
3. Use 150px (or 300px HiDPI) for list images.
4. Reduce CPU load by removing some CSS animations - don't pulse library refresh status, don't pulse playing but muted volume, and use outlined pause icon to indicate waiting to play.
5. Fix custom actions for playlists.
6. Add PLAYLISTID and PLAYLISTNAME to custom action variables.
7. Remove fix for mapping of mysqueezebox.com icons, as no longer required and breaks some favourites images.
8. Add support for volume control of individual players with volume fixed at 100% via new status query attribute - thanks to Sam Y
9. In group volume dialog, fix player name for fixed volume players.
10. Ignore clicks on disabled queue context menu items.
11. Store player volumes when creating a group player.
12. Fix drag'n'drop in grid view not showing drag thumbnail.
13. Allow genre images to be PNG files.
14. Add (initial) support for playlist images - need to manually add "playlistImages: '1'" to 'prefs/plugin/material-skin.prefs'. Images need to be in 'prefs/material-skin/playlists/' - and have same name requirements as per genre images.
15. Use user genre, and playlist, images when listing favourites (if relevant option is enabled).
16. Create '.missing' images (e.g. 'rock.missing') for genre, and playlist, images that are not found (if relevant option is enabled).