utils: OnRequestQueue: popleft only after consumption. also some PersistentObject stuff
utils: OnRequestQueue: popleft only after consumption. also some PersistentObject stuff

kingsj/music-player,albertz/music-player,albertz/music-player,albertz/music-player,albertz/music-player,kingsj/music-player,kingsj/music-player,albertz/music-player,albertz/music-player,kingsj/music-player,kingsj/music-player