message: Remove unnecessary 'load' on notif audio element
  It's not necessary to explicitly load and it throws an exception
  if you call it while the element is playing, so better to just
  remove it.
diff: @@ -96,7 +96,6 @@ const Notifier = {
  _playAudioNotification: function(ev, room) {
  const e = document.getElementById("messageAudio");
  if (e) {
  - e.load();
  e.play();
  }
  },
  