Updated screens with new ui on mobile

In addition, replace the from with a div because they shouldn't be
nested.

Since we are no longer in a form, manually validate the password. This
was necessary regardless, because it was possible to bypass the digits
rule by pressing "add".

- add possibility to allow execution of the button's routine besides triggering
`toolbarButtonClicked` API event
- keep backwards compatibility
- get rid of `ToolbarButton`

* feat(security) Security Options screen

The main room lobby gets diverted to the rooms, things can get confusing. We
might need to revisit this in the future.

* feat(toolbox) allow any toolbox button to be displayed as main

fixes the previous behaviour where only a certain set of buttons were whitelisted for being displayed in the main toolbar

* code review

* code review - fix avatar icon position

* Make Jitsi WCAG 2.1 compliant

* Fixed password form keypress handling

* Added keypress handler to name form

* Removed unneccessary dom query

* Fixed mouse hove style

* Removed obsolete css rules

* accessibilty background feature

* Merge remote-tracking branch 'upstream/master' into nic/fix/merge-conflicts

* fix error

* add german translation

* Fixed merge issue

* Add id prop back to device selection

* Fixed lockfile

Co-authored-by: AHMAD KADRI <52747422+ahmadkadri@users.noreply.github.com>

* Remove pointless custom headers, fall back to ModalHeader instead.

- Disables the invite buttons while invites are ongoing
- Adds a keyboard shortcut (Enter) to send out invites
- Closes AddPeopleDialog upon successful invites sent
- Fixes the SecurityDialog closing when trying to set E2EE key via Enter shortcut
- Removes superfluous separator from SecurityDialog