* BBB has specific completion indicator that need to be taken into account
* Fix mock requests so we can send participant id and then attach events to them
* Refactor slightly the broker to split meeting logic from request (decoding)
* Fix update completion state cron
* Completion view should work out of the box
* Patch the _user_outline and _user_complete so it works with completion view, while
implementing something better in MDL-74468