added savedUserMusicFiles and loadUserMusicFiles
Merge branch 'master' of https://github.com/SharUTC/SharUTC.git
added savedUserMusicFiles and loadUserMusicFiles, update DownloadMusicsCommandImpl
Merge branch 'master' of https://github.com/SharUTC/SharUTC.git
Merge branch 'master' of https://github.com/SharUTC/SharUTC.git
Merge branch 'master' of https://github.com/SharUTC/SharUTC.git