* Welcome page calendar ui improvements

* Addressing PR review comments.

Calendar integration ui

The current code was splitting it on a space, which made nicknames such as “Link Mauve” appear as “Link”, whereas it gets displayed correctly everywhere else in the UI.

* Implements calendar entries edit.

Share text generation between calendar-sync and the share-room feature.

* Fixing comments.

* Clone the event element we modify on update.

- navigator.{platform,plugins} were needed by the no longer existing screenshare
  adapter
- document.implementation is already polyfilled by xmldom

If a relative BOSH URL is found (as docker-jitsi-meet does) construct a full URL
based on the location URL and context root.

Also remove some default options since we need the config file anyway, so I see
no point in doing the extra work.

Yours truly refactored routing in https://github.com/jitsi/jitsi-meet/pull/3222
and broke it. When a bare room is entered the pathname was not updated when
applying the default URL.

* Refactor calendar-sync feature to be loaded on web.

For the web part it just adds new property to enable/disable calendar web integration, disabled by default.

* Initial implementation of retrieving google calendar events.

* Initial implementation of retrieving microsoft calendar events.

* Fixes comments.

* Rework to use the promise part of microsoft-graph-client api.

* Moves dispatching some actions, fixing comments.

* Makes sure we do not initializeClient google-api client multiple times.

* Do not try to login when fetching calendar entries.

The case where there is a calendar type google selected, but not logged in, trying to login on loading welcome page will show a warning that it tried to open a popup, which was denied by browser.

* Updates profile display data on sign in.

* Propagate google-api state to calendar-sync only if we use google cal.

* Adds sign out action.

* Clears the event listener when the popup closes.

* Clears calendarIntegrationInstance on signOut.

* WIP: UI for calendar settings, refactor auth flows

* Clean up some unused constants, functions and exports.

* break circular dependency of function and constant

* Exports only isCalendarEnabled from functions.

* Checks isSignedIn when doing fetchCalendarEntries on web.

* address comments

List microsoftApiApplicationClientID in undocument config.

remove unused SET_CALENDAR_TYPE action

use helper for calendar enabled in bootstrap

reorder actions

reorder imports

change order of signin -> set type -> update profile

add logging for signout error

reword setting dialog desc to avoid redundancy

add jsdoc to microsoft button props

reorder calendar constants

move default state to reducer (not reused anywhere)

update comment about calendar-sync due to removal of getCalendarState

update comment for getCalendarIntegration

remove vague comment

alpha order reducer, return default state on reset

alpha order persistence registry

remove unnecessary getType from apis

update comments in microsoftCalendar

alpha order google-api exports, use api.get in loadGoogleAPI

set jsdoc for google signin props

alpha order googleapi methods

fix calendartab docs

* Moves fetching calendar from APP_WILL_MOUNT to SET_CONFIG.

The web part needs configuration in order to refresh tokens (Microsoft).

* Fixes storing token expire time and refreshing tokens in Microsoft impl.

* Address comments

updateProfile changed to getCurrentEmail

rename result to results

stop storing integration in redux, store if ready for use

use existing helpers to parse redirect url

* update jsdocs, get google app id from redux

* clear integration instead of actual sign out

- Increase z-index so the subtitles display over tiles.
- Add a background to the subtitle text.
- In general make the subtitles narrower.

* feat(tile-view): initial implementation for tile view

- Modify the classname on the app root so layout can adjust
  depending on the desired layout mode--vertical filmstrip,
  horizontal filmstrip, and tile view.
- Create a button for toggling tile view.
- Add a StateListenerRegistry to automatically update the
  selected participant and max receiver frame height on tile
  view toggle.
- Rezise thumbnails when switching in and out of tile view.
- Move the local video when switching in and out of tile view.
- Update reactified pieces of thumbnails when switching in and
  out of tile view.
- Cap the max receiver video quality in tile view based on tile
  size.
- Use CSS to hide UI components that should not display in tile
  view.
- Signal follow me changes.

* change local video id for tests

* change approach: leverage more css

* squash: fix some formatting

* squash: prevent pinning, hide pin border in tile view

* squash: change logic for maxReceiverQuality due to sidestepping resizing logic

* squash: fix typo, columns configurable, remove unused constants

* squash: resize with js again

* squash: use yana's math for calculating tile size

move duplicate code from WavAdapter and FlacAdapter to a base class

fix Promise in setMuted

Which key should we use? Using "L" for now.

When newly joined clients register for XMPP events upon
CONFERENCE_JOINED, those events that is carried by presence (e.g. START_COMMAND) was
already fired.
Temporary solution is to let the client send a ping message after
registering XMPP event listeners. The moderator will respond with
pong, which forces the presence to be resent.

Situation when the RecordingController receives a new START_COMMAND
while it is initializing the recording adapter for the previous
START_COMMAND.