Small player fix to load mp3 datas
Fix message type MUSIC_GET to MUSIC_GET_CATALOG in method SendUnicastCatalog from NetworkService
Rename message type MUSIC_CATALOG in MUSIC_SEND_CATALOG for better comprehension
End of SendCatalogCommand and FetchRemoteCatalogCommand implementation
Merge branch 'master' of https://github.com/SharUTC/SharUTC.git
Revert "[Network] Add a class NetworkTest to test the message exchange by the network"

This reverts commit af446caa1f6018f754196ea9f2a42ab9840eb8a1.
[NetworkMock] Now can keep track of several sent messages.
Add javadoc on Comment.
Move incrementation of index on comments to the Music.addComment().
Create a constructor for comments.
Merge branch 'master' of https://github.com/SharUTC/SharUTC
Merge remote-tracking branch 'origin/master' into ui