Subtracks 1.2.0

## New * Top Songs in the Artist view now tries to fallback to searching for songs by the artist and sorting by play count/rating if the server doesn't support the getTopSongs endpoint * Images are now downloaded in the background via the Android DownloadManager and won't be corrupted if the app is closed * Note: the cache file structure has been changed, so all images will be erased on update and new images will be downloaded as normal ## Fixed * Fixed some screens displaying under the sta