- small refactor

- enable calendar card and footer on narrow mode

* Add buttons to send messages/set nickname.
* Redesign message/nickname inputs.
* Pin messages to the input.
* Add keyboard avoider for Safari.
* Make chat content scrollable on mobile.

* Enforce fixed column number at various width breakpoints.
* Bring back the filmstrip at small sizes but hide it.
* Change default maximum columns to 7.

* Fix toolbox buttons not displaying properly when chat is open.
* Open chat in fullscreen dialog past custom thresholds when mobile/desktop toolbox would become unusable due to chat
* Remove mobile chat check when displaying toolbox

* fix(Toolbox) Maintain overflow button visible at all times

* Make changes only on desktop browser

* Fix layout
* Change background color & show image

* Adding responsive to jitsi logo, buttons and hiding some part of the interface
* moving media types thresholds to variables and apply only to screen
* hide chrome extension banner on very small view
* Hide filmstrip only on desktop narrow windows