[Util] Support prioritites in QueueManager.
[Util] Support queue management in VkAuthManager.
[TS] Migrate to queue automanagement.
[TS] Request queue is prioritized now.
[TS] Support fetching arbitrary user albums for #1314.
[TS] Added FriendsManager for #1314.
[TS] Instantiate FriendsManager.
[TS] Keep tracks count.
[TS] AlbumsManager::finished().
[TS] Remove users without audio.
[TS] Set items icons.
[TS] Fetch users' photos.
[LMP] Removed some debugging output.
[TS] Fixed custom album role.

Finally closes #1314.