InfosSongComponent: comments List implemented. View can be better but it's working
InfosSongComponent: viewing comments has been improved
InfosSongPopUpComponent, CommentSongPopUpComponent: started implementing the CommentSongPop and linking it to the InfosSongPopUp
InfosSongPopUpComponent, CommentSongPopUpComponent: closing the pop up TO FINISH
Merge pull request #384 from akdiallo/IHM_update_akd

[IHM] update InfosPopUp & CommentPopUp