- Remove external install dialogs and fix related screensharing error handling.
- Remove obsolete options from config.js and from configWhitelist.js

Up until now we relied on implicit loading of middlewares and reducers, through
having imports in each feature's index.js.

This leads to many complex import cycles which result in (sometimes) hard to fix
bugs in addition to (often) breaking mobile because a web-only feature gets
imported on mobile too, thanks to the implicit loading.

This PR changes that to make the process explicit. Both middlewares and reducers
are imported in a single place, the app entrypoint. They have been divided into
3 categories: any, web and native, which represent each of the platforms
  respectively.

Ideally no feature should have an index.js exporting actions, action types and
components, but that's a larger ordeal, so this is just the first step in
getting there. In order to both set example and avoid large cycles the app
feature has been refactored to not have an idex.js itself.

The resolved promise is expected to return an array.

- Adds the ability to share video as a "PiP" when screenshare is in progress.
- Add a method for creating a local presenter track.
- Make sure isLocalVideoTrackMuted returns the correct mute state when only screenshare is present.
- Make sure we get the updated window size of the window being shared before painting it on the canvas.
- Make sure we check if the shared window has been resized

React Native doesn't define __filename nor __dirname so do it artisanally. In
addition, this helps with centralizing the configuration passed to loggers.

* ref(user-interaction): remove storing of listener

* ref(user-interaction): move browser requirement check to lib-jitsi-meet

* ref(user-interaction): no inner function for listener, use module scope

This only shows up if we cannot prompt again, like when turning permissions off
in the Settings app in iOS.

* fix(conference): require user interaction to unmute in iframe

* squash: explicitly whitelist react native

* Skips setting undefined device id to sink in audio preview.

* Fallbacks to use labels for user selected devices.

* Fixes comment.

The state about currently opened devices is filtered and not stored, where we only store when user selects a device preferences.
Also allow changing input devices for Firefox when we are not in a conference.

Using anything non-serializable for action types is discouraged:
https://redux.js.org/faq/actions#actions

In fact, this is the Flow definition for dispatching actions:

declare export type DispatchAPI<A> = (action: A) => A;
declare export type Dispatch<A: { type: $Subtype<string> }> = DispatchAPI<A>;

Note how the `type` field is defined as a subtype of string, which Symbol isn’t.

This feature is intended for spot. Spot can have an
HDMI -> usb adapter hooked up to it. In that case,
attempting to screenshare should use that adapter
as a screensharing source. Jitsi-Meet should pass
a configured screenshare source into lib-jitsi-meet
so it can be used as a source.

* ref(video-layout): move middleware for TRACK_ADDED

* ref(video-layout): call mucJoined when redux knowns of conference join

Zoltan Bettenbuk suggested the following:

         const state = getState();

          if (desiredTypes.length === 0) {
 -            const { audio, video } = state['features/base/media'];
 -
 -            audio.muted || desiredTypes.push(MEDIA_TYPE.AUDIO);
 -            video.muted || desiredTypes.push(MEDIA_TYPE.VIDEO);
 +            const startAudioOnly = getPropertyValue(state, 'startAudioOnly');
 +            const startWithAudioMuted
 +                = getPropertyValue(state, 'startWithAudioMuted');
 +            const startWithVideoMuted
 +                = getPropertyValue(state, 'startWithVideoMuted');
 +
 +            if (!startWithAudioMuted) {
 +                desiredTypes.push(MEDIA_TYPE.AUDIO);
 +            }
 +            if (!startAudioOnly && !startWithVideoMuted) {
 +                desiredTypes.push(MEDIA_TYPE.VIDEO);
 +            }
          }

          const availableTypes

The final commit is really a different implementation of the same idea
but takes into account that the state of base/media already contains the
intent of the URL and notices the delay in the realization of the
background app state.

Additionally, unbreaks one more case where setAudioOnly is incorrectly
dispatched on CONFERENCE_LEFT or CONFERENCE_FAILED and, consequently,
overrides the intent of the URL.

The _setMuted method in a corner case was making an attempt to create
second video track, because it was not taking pending tracks into
account.

* ref: Restructures the pinned/unpinned events.

* ref: Refactors the "audio only disabled" event.

* ref: Refactors the "stream switch delay" event.

* ref: Refactors the "select participant failed" event.

* ref: Refactors the "initially muted" events.

* ref: Refactors the screen sharing started/stopped events.

* ref: Restructures the "device list changed" events.

* ref: Restructures the "shared video" events.

* ref: Restructures the "start muted" events.

* ref: Restructures the "start audio only" event.

* ref: Restructures the "sync track state" event.

* ref: Restructures the "callkit" events.

* ref: Restructures the "replace track".

* ref: Restructures keyboard shortcuts events.

* ref: Restructures most of the toolbar events.

* ref: Refactors the API events.

* ref: Restructures the video quality, profile button and invite dialog events.

* ref: Refactors the "device changed" events.

* ref: Refactors the page reload event.

* ref: Removes an unused function.

* ref: Removes a method which is needlessly exposed under a different name.

* ref: Refactors the events from the remote video menu.

* ref: Refactors the events from the profile pane.

* ref: Restructures the recording-related events.

Removes events fired when recording with something other than jibri
(which isn't currently supported anyway).

* ref: Cleans up AnalyticsEvents.js.

* ref: Removes an unused function and adds documentation.

* feat: Adds events for all API calls.

* fix: Addresses feedback.

* fix: Brings back mistakenly removed code.

* fix: Simplifies code and fixes a bug in toggleFilmstrip

when the 'visible' parameter is defined.

* feat: Removes the resolution change application log.

* ref: Uses consistent naming for events' attributes.

Uses "_" as a separator instead of camel case or ".".

* ref: Don't add the user agent and conference name

as permanent properties. The library does this on its own now.

* ref: Adapts the GA handler to changes in lib-jitsi-meet.

* ref: Removes unused fields from the analytics handler initializaiton.

* ref: Renames the google analytics file and add docs.

* fix: Fixes the push-to-talk events and logs.

* npm: Updates lib-jitsi-meet to 515374c8d3.

* fix: Fixes a recently introduced bug in the google analytics handler.

* ref: Uses "value" instead of "delay" since this is friendlier to GA.

* ref(analytics): centralize all event names

* squash: fix typo and alpha ordering

* squash: rename file to AnalyticsEvents to parallel lib-jitsi-meet

Refs: https://github.com/jitsi/lib-jitsi-meet/pull/648

It's possible for a track to be disposed but still on the redux store, before
the reducer removed it.

We're already using the notion of _WILL_ in redux action types and
there's currently no compelling reason to introduce _BEGIN_ as well.

While reviewing "[PREVIEW|RN]: Handle getUserMedia in progress" I
discovered JSDoc comments which could be improved. They are not
necessarily 100% related to the PR.

This commit adds extra actions/Redux state to be able to deal with
the GUM operation being in progress. There will be early local track
stub in the Redux state for any a local track for which GUM has been
called, but not completed yet.

Local track is considered valid only after TRACK_ADDED event when it
will have JitsiLocalTrack instance set.

* ref(notifications): convert some dialogs to error or warning notifications

- Expand the configurability of the Notification component so warnings
  and errors can be displayed.
- Allow Notification to take in arbitrary text for the body.
- Rename defaultTitleKey to titleKey for consistency with descriptionKey.

* ref(notifications): remove openReportDialog method

openReportDialog is a wrapper around showError that adds
a logger statement. It is being called in one place only
so remove the method and have that one place call logger.

* ref(notifications): UI.showTrackNotWorkingDialog takes a boolean

Change UI.showTrackNotWorkingDialog so it takes a boolean
arguments instead of the entire track. A small refactor so
the method needs to know less.

* [squash] Fixes eslint errors

* WiP: Fixes desktop sharing error strings and adds support button

* [squash] Fix icons appearances

* [squash] Fix translate titles and messages

* [squash] fix(translation): Fixes incorrect password string

* [squash] fix(recording): Fixes recording message

* [squash] fix(warning): Turns some warnings to errors and makes support link optional.

* [squash] fix(translation): Addressing language comments

* [squash] Fixes jsdoc and formatting

* [squash] fix(noopener): Fixes window.open noopener

* [squash] fix(constants): Extract constants and refactor NotificationWithToggle

* [squash] fix(lang): Fixes camera and mic error titles

* [squash] fix(supportLink): Renames addSupportLink to hideErrorSupportLink

The lib will accept new style constraints and use those
to capture audio/video. By defining the constraints in
config, there is greater flexibility for defining
and changing constraints.