Improve poll results in public chat

Notify users when presentation is available for download

Update filenames for saved public chat / users list

Restore activity check modal.

Fix regular expression in Arc Player (LGTM)

LGTM report:

    The escape sequence '\.' is equivalent to just '.', so the sequence may
    still represent a meta-character when it is used in a regular expression.

Signed-off-by: Stefan Weil <sw@weilnetz.de>

If activity check was enabled in server, the activity check modal wasn't showed
to users and after a given time the user was disconnect, also fix the meeting-end
and error-screen messages, informing the user the reason why he was kicked.

Make the bigbluebutton user id be mapped on startup

Add a minimum socket validation to full-audio connection

Add Layout Context and Layout Manager

Bump lodash from 4.17.15 to 4.17.19 in /bbb-webhooks

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.19

)

Signed-off-by: dependabot[bot] <support@github.com>

Set raise hand notification / sound on by default

Add missing package-lock info for "hark"

Rework locales list generation

Add notification when mic is muted while speaking

Non-blocking presentation upload

Improve toast notification for raised hands

Improvements on web and bbb-libreoffice

Display tooltips when presentation is fullscreen view