Fix newlines in playback of chat

fixes outdated auto tests

Remove unsafe lifecycle from all dropdown related components

Fix intl loop

Events archiver: Strip more invalid characters

Modern Camera Profiles

This patch switchessing a somewhat more modern default for the camera
profiles by requesting 720p for the `high` and `hd` profiles like this.

This was discussed on the developers list at:

- https://groups.google.com/g/bigbluebutton-dev/c/PL3kXV9pZmo

Add preloading for slides

Fix dropdown menus not closing on item select

Remove unsafe lifecycle from intl component

Switch to YAML Syntax for Logging

This patch switches to using a much more readable YAML syntax for the
logging configuration in the HTML5 client.

On my server 2.3 alpha, the method metadata_for(meeting_id) gives back {}
(empty Hash). Thus "return if meeting_metadata.nil?" does not occur.

Does @redis.hgetall give {} instead of nil, even though there is a comment in
node_modules/redis/lib/utils.js "hgetall converts its replies to an Object. If
the reply is empty, null is returned"???

Virtualized user list

Allow polling when presentation does not exist but chat is available

Merged 2.2.22 into 'develop'

Update the list of invalid characters based on what the XML
specification permits and discourages.

Use the ruby string `scrub` method to remove invalid characters that
can't be expressed in the `tr` syntax, like unpaired surrogates and
UTF-8 prefix bytes.

video-provider: normalize hidden cameraProfiles constraints

Also add some inlined docs to settings.yml

Improve poll results in public chat

Notify users when presentation is available for download

Allow more tags in welcome message/ mod only message

Pulled HTML5 locales Aug 10, 2020

Improve log for parsed passed parameter error

Remove muteAll and muteAllExceptPresenter from breakouts