Adjust Homepage buttons layout for low-res phones
Fixed jQuery issue: external JS was reloaded on each pageview
Adding album to playlist: all "Add" buttons are disabled.
And similar to ALl tracks, previously-added tracks are not re-added!
UI interaction on next/prev to update current track or playlist
Rate current track support in the JSON API and the UI
CSS cleanup for current track
Debug: highlight previous Rating value
JS Debug: hidePageLoadingMsg() for other buttons than prev/next