function handlePlaylistShuffle(playlist) {
    /*
      Either shuffles or removes shuffle on the playlist state.
    */
    _shuffler2.default.toggleShufflePlaylist(playlist);

    /*
      Visually sync the playlist shuffle statuses.
    */
    _shuffleElements2.default.syncPlaylist(playlist);
  }
Handles the event on the playlist shuffle button.

@param {string} playlist - The playlist string the shuffle button belongs to.