Bring our 5 configs into line with current upstream versions
(jitsi-meet_7648 and stable-7648-4 tags from the jitsi-meet and
docker-jitsi-meet repositories respectively). Attempt to preserve
most of our earlier overrides:
* configure Etherpad integration
* disable background blurring
* disable watermarks
* open shared document on join
* start with audio and video muted
* redirect HTTP to HTTPS
* disable XMPP WebSockets
* disable P2P connections
* templated credentials
* templated unique JVB server identifiers
Drop any options we previously set which later became defaults (like
useRoomAsSharedDocumentName or UTC as the TZ). Identify the upstream
repo and tag on which each file is based. Stop claiming Firefox is
not recommended, now that the default configuration adds a pre-join
page which helps browsers realize they should not treat the audio
stream as unsolicited. Switch to newer vars for muting audio and
video as a boolean rather than at a participant threshold.
Update the docker-compose files to use the stable tag instead of
latest, since upstream seems to just stop refreshing the latest tag
far too often. Clean up extra envvars we were setting for JVB which
we didn't pass through to the containers.
Change-Id: I1e5a3836917f3d90ad7dd1c0771871740fda3cda
a2eda2203a