[LMP MTPSync] Async polling.
[LMP MTPSync] Devices cache.
[LMP MTPSync] Properly set track date.
[LMP MTPSync] Fixed debugging output.
[LMP MTPSync] Don't try uploading when polling.
[LMP MTPSync] Cache eviction timer.
[LMP MTPSync] Properly set albums on upload.
[Vrooby] Fix icon update on last unhide.