Client well known compatibility

Related to #658 (Github Issue).

Related to #658 (Github Issue).

According to the docs, "e2ee" is already under "io.element":
  https://github.com/vector-im/element-web/blob/develop/docs/e2ee.md#disabling-encryption-by-default
however "jitsi" is still under "im.vector.riot":
  https://github.com/vector-im/element-web/blob/develop/docs/jitsi.md#configuring-element-to-use-your-self-hosted-jitsi-server

For now let's just maintain backward and forward compatibility for both
settings since the client version is out of the control of this
playbook.

Allow configuration of Element's bug_report_endpoint_url and showLabsSettings

showLabsSettings is the new enableLabs I guess. enableLabs doesn't seem to do anything anymore. It had been deprecated for a while.

This PR also removes @riot-bot:matrix.org as the default welcome_user_id since it doesn't exist anymore.

New docker image appservice-slack

Fixed dead link to mx-puppet-discord

Update configuring-playbook-dimension.md

Improved formatting for a header that was attached to the previous paragraph (...by inserting a newline).

Corrects the Caddyfile

Update element (1.7.5 -> 1.7.7)

Use the same naming convention as the other mx-puppet suite.

Caddy2 Caddyfile example and Comment in examples/host_vars.yml

Update configuring-playbook-jitsi.md

Changes matrix_dimension_integrations_ui_url from /riot to /element h…

PullRequest

Removes DS-Store

Fix links to using your own webserver doc

modified example for jitsi ldap authentication to show all available variables.

Related to #643 (Github Issue)

Change anonymized to general

Change anonymized to more proper term as server vice this is not anonymized. Server name is the first parameter that is collected. And if server happens to be for individual use these statistics would be at personal level without any anonymising.

This is mainly to address SSL renewal not working for us due to:
- https://github.com/ansible/ansible/issues/71213
- https://github.com/ansible/ansible/pull/71207

Using the cron module was hacky anyway. We shouldn't need an extra
level of buggy abstraction to manage a cronjob file.