Remove default UID/GID

If one runs the playbook with `--tags=setup-all`, it would have been
fine.

But running with a specific tag (e.g. `--tags=setup-riot-web`) would
have made that initialization be skipped, and the `matrix-riot-web` role
would fail, due to missing variables.

Added a documentation enhancement regarding external TURN server

Clarify domain of Dimension admin users in docs by using matrix_domain variable

Update coturn (4.5.1.1 -> 4.5.1.2)

fix skype bridge being rebuilt when upstream changed

Add caddy 1 well-known example

Adjust params

Document how to point dimension jitsi widgets at your own jitsi instance

Add support for Jitsi LDAP authentication

This can be removed once turt2live/matrix-dimension#345 is resolved.

Fixes the example, to add the missing required configuration key
for the HTTP policy provider.

Related to #477 (Github Issue).

Update matrix-appservice-irc to 0.16.0

Note the potential breaking change

Resolves #474

* add permalinkPrefix to riot-web config

* add feature to change default theme of riot-web via its config file

* remove matrix_riot_web_change_default_theme and provide sane default

Add information to make jitsi work with a client in LAN

Update Jitsi docker images to stable 4416

We've had reports of the `:latest` tag not working anymore,
leading to an error as described here:
https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/341

Upgrade Synapse (1.12.3 -> 1.12.4)

Related to #454 (Github Pull Request).

Initial mx-puppet-slack bridge role

Add support for running dimension in an unfederated environment

Related to #466 (Github Pull Request).

Allow skype more configurations for relay and provisioning

Fixes #465 (Github Issue).

Related to https://github.com/xwiki-labs/synapse_scripts/pull/12.

Architecture

Update nginx (1.17.9 -> 1.17.10)