Use something more compact than uuid
center the avatars in both directions
Add injectEventMethods, which injects event methods into an existing object, instead of just inheriting
Fix #312.  Fix #292.  Add group names, so that the group ID is more hidden.  Add an interface to the camera page to get the invite link, set the group name, and end the session.  The camera page also has controls to start Hotdish if you open it when Hotdish is not already activated.  The Hotdish button now opens the camera page.