* feat(welcome-page): be able to open settings dialog
- Create a getter for getting a settings tab's props so the device
selection tab can get updated available devices.
- Be able to call a function from a tab after it has mounted. This is
used for device selection to essentially call enumerateDevices on
the welcome page so the device selectors are populated.
- Remove event UIEvents.AUDIO_OUTPUT_DEVICE_CHANGED. Instead directly call
setAudioOutputDeviceId where possible.
- Fix initialization of the audioOutputDeviceId in settings by defaulting
the audio output device to the one set in settings.
* squash: updateAvailableDevices -> getAvailableDevices, add comment for propsUpdateFunction
Move it away from AbstractApp into an auxiliary function. In addition, introduce
a new `getServerURL` function which gets the configured server URL and defaults
to meet.jit.si as before.
* feat(settings): setting dialog
- Move device selection, profile edit, language select, moderator
options, and server auth into one modal with tabs.
- Remove side panel profile and settings and logic used to update
them.
- Pipe server auth status into redux to display in the settings
dialog.
- Change filmstrip only device selection popup to use the new
stateless settings dialog component.
* squash: do not show profile tab if not guest
* squash: profile button not clickable if no profile to show
* squash: nits
* ref: Settings dialog.
Contributing all buttons in one place goes against the designs that we
set out at the beginning of the project's rewrite and that multiple of
us have been following since then.