remove unused protocol method in FeedAudioPlayerDelegate
group playerHasBeenPlayed with other FeedAudioPlayerDelegate methods
alphabetize method order in FeedAudioPlayerDelegate
alphabetize appearance of FeedAudioPlayerDelegate method implementations in FeedViewController
organize methods in FeedViewController
remove playFirstAudioClip from FeedAudioPlayerDelegate
group refresh control selector with other UITableViewController methods
add pragma mark for UITableViewDelegate methods
pull playFirstAudioClip out of FeedViewDelegateMethods since it's not part of that protocol