[Title] Added missing css file
Merge pull request #2 from bylee/master

sync code
Merge pull request #3 from bylee/master

bylee recent work code sync
Merge pull request #4 from bylee/master

dialog, window 공통화 부분 sync
[Title] Music list get mock
[Title] 뮤직파일 다이얼로그 생성, 뮤직 파일 리스팅.
[Title] Music player 와 Music file Manger 을 같은 Wnd 에서 구동되게 변경.
[Title] Fixed bug - Can't create Wnd
[Title] Music player and Music file manager Toggle.
[Desc.] 뮤직 플레이어와 뮤직 파일 매니저 토글 가능하도록 구현.
[Title] Added Music File upload server code, Files server code bug fix
[Desc.] test using 'curl' < curl -F files=@/home/gseok/test.txt http://localhost:3000/musics >
[Title] Add Music file upload UI and logic.
[Title] Modified, 'Music file' upload then reflect view.
Merge remote-tracking branch 'bylee/master'
[Title] Added Server Code - Contact Categories 'categoryChanged', 'categoryRemoved'
[Title] Addded Server Code - 'Categories Name change' (put)
[Title] Added 'server' mock logic.
[Desc.] categories 'remove and rename' logic.
[Title] Added remove Contacts Dialog, dynamic Contacts Categories list show.
[Title] Added ( rename, remove ) categories logic.
[Title] Modified, socket  event is twice occurred.
[Title] Added window close time, mode and collection destory logic