* feat: Uses mod_external_services supporting urn:xmpp:extdisco:2.

The old mod_turncredentials.lua is left to continue working for those using old installs.
New install will start using the new module which will no longer be needed with prosody 0.12.

https://hg.prosody.im/prosody-modules/file/4841cf3fded5/mod_external_services/mod_external_services.lua

* squash: Updates ljm to support urn:xmpp:extdisco:2.

* feat: Add mod_client_proxy and mod_roster_command.

Taken from prosody-modules 4317:456b9f608f with the
mod_roster_command patch applied.

* feat: Use mod_client_proxy to proxy to jicofo.

* add systemd to letsencrypt

* Better readability of systemd change

Co-authored-by: Sebastian Feustel <sebastian.feustel@aei.mpg.de>

* chore: Updates mod_smacks.lua version to latest.

https://hg.prosody.im/prosody-modules/file/db75772afb28/mod_smacks/mod_smacks.lua

* Drop unused modules.

* Update docs.

* Move utility functions away from domain mapper.

* Remove some chatty debug log messages.

* Drops not needed patch for mod_websocket.

We sometimes see "error   Top-level error, please report:
                  /usr/lib/prosody/util/serialization.lua:38: Can't serialize table: table has multiple references".
This also slows down restarting prosody.

* feat: Make possible to reload config for filter rayo iq.

* feat: Throttle out call attempts to the max number per minute

* squash: Updates comment about config

When returning the error and showing to user not allowed screen we were not completely halting the prejoin operation when token verification fails on room join and the token is valid in general.

jibri queue component stop checking room validation in token
Jibri queue component debug output when bad token is found

The full room JID is now passed properly to verify_token
verify_token now also expects the correct jid for validation

Allows each module that does token validation to have its own cache

Provide region value in POST to jibri-queue service

It's to be used in docker-jitsi-meet to patch older
Prosody versions until this change becomes available.

Display name for lobby operations notifications are taken from the list of knocking participants which is available only to moderators. In case of not all moderators the notifications were broken.

FIX: reply to iq only on successful reply from queue server

* Add hook for create lobby

* Remove duplicated code

Add avatar to user context so it is picked by the web interface