Brings back the button for generating meeting URLs for calendar events.

* Adds a notification when remote lock happens.

* Updates translations.

Removes unused strings and extracts room password to separate translation, to be able to change it when deployment uses only digits.

* Formats the conference pin when showing it.

* Removes member from translation in favour of participant.

* Updates formatting of the pin.

* Adds a notification when password is remotely removed.

* Adds option to be able to cancel locked rooms and leave.

* Removes not needed operations when canceling password prompt.

Join notifications are already supressed for the local
participant, so hide the left notification. For now
the notification is not being shown on mobile to keep
the same existing behavior and because a copy change
will be needed, but will be added once batching is
implemented.

* Device selection now always shows the device that managed to open.

* Simplifies implementation, skips using state.

The only way to render the welcome page in reduced UI mode currently is to
hangup a call from the Android ongoing notification while in PiP mode.

Pretend we have left instead of triggering a call failure. The user was already
told in the dialog.

Otherwise the participant will not have been added yet
to state so the participant name will not display in
the notification.

When native SDK users end a meeting the view gets disposed and detached from
React, and then the entire app gets destroyed and these errors get printed at
the error level, throwing some people off.

* Fixes inviting more than one participant.

* Shows a notification when participants are invited.

* Adds support for both .id and .user_id props for people query results.

This was hit on a corner case when ConnectionService will deny
the request to start the call. I am not sure, but it could have been
that the conference object has been disposed or closed or something
else, but the fact is that 'conference.room' was not defined and things
crashed. It is not safe to access conference's private field 'room'. It
is true JitsiConference doesn't follow the practice of marking this
field as private with the underscore '_', but it is not a public field.

* Configurable (sub)optimal and unsupported browsers

* maybe this helps somehow

Also, use the helper function to get the display name for a participant.

In case wrong props are passed in, such as pointing to
an index that does not contain a value in the tabs
array.