Refactored comment.create to allow for song_id = nil
Removed uneeded if @songs.empty? statement
Added form to allow user to confirm if they don't add a song
Added form to allow user to confirm if they don't add a song
Commented out testing puts statements
Added tests to songs controller search and search_for_use_by_comment
Added test for create method of CommentsController
Added alert to page if user search finds no songs.
Shortened test string to account for newline issues on rendered pages