Merge remote-tracking branch 'upstream/master' into breakout-rooms-html5

* upstream/master:
  removed unecessary import statements
  adjusted to meet component/container structure conventions and simplify code
  Remove wrong commited files
  Refactor API Cursor's
  Fix bug related to presentation handlers
  linting fixes & updated based on feedback
  HTML5-clent messages on chat - changed icon for logged out users
  fixed an error with exit audio
  Added mute/unmute/join listen only/leave audio features to join audio modal
  HTML5-client messages for logged out user on chat
  HTML5-clent messages on chat