developed Music List

Done:
 - develop Music List (using musicComponent directive)
 - develop showing Music Information through music-info-button
 - develop filter ( secondToMMSS, shortString:size )
changed data format

Done:
 - data 'musiclist in playlist' be changed follow to MidiObject API
 - jshint free
added midi Save func Skeleton

Done:
 - midi save func skeleton
Merge branch 'develop-front-end' into integration-v1
Merge branch 'midi' into integration-v1
hide footer in Editor Page

Done:
 - hide footer in Editor Page
Merge branch 'integration-v1' into develop-front-end
added MidiFile Creation & Upload
Merge branch 'develop-front-end' into integration-v1
sync with integration branch