Make the BBB echo test a user configurable option

[tibroc]

What?

BigBlueButton offers the echo test before entering a meeting to check your local audio setup.
Usually some users prefer to have the echo test while others who know their setup very well, prefer to skip it.
We want to make this configurable for each user.

How?

There are several locations in the Stud.IP-UI where personal settings can be placed. In our opinion it should be as close as possible to where the meetings take place: in the meetings-plugin tab itself.

For lecturers and students:
If you are in the tab for meetings, in the sidebar a new category named “Personal Settings” (“Persönliche Einstellungen” in German) is added. Here you have then the option to check if you want to activate the echo test option (“Activate Audio Test”/“Audiotest aktivieren”).

For Plugin Admins:
Admins should be able to set a default for the checkbox value, because only they know what is best for the majority of their user base.

Additional Info

The API-Parameter that needs to be passed to the join-call are documented here:
https://docs.bigbluebutton.org/administration/customize/#passing-custom-parameters-to-the-client-on-join
It should be the userdata-bbb_skip_check_audio_on_first_join parameter.