Password required dialog (web&native) and native room lock using basic react dialogs.

It's no longer needed for building since Node >= 6 already has the minimum
required ES6 syntax. In addition, drop it from app.js since we use Webpack with
the Babel loader to transpile ES5 to ES6.

jsdocs were added, remove old comment which no longer applies.

We (i.e. the jitsi-meet project) are using the haste module system on
Web as well, not only on React Native. Unfortunately, Flow does not
support .web.js by default. Override Flow's defaults to include .web.js
as well. Technically, we have .native.js as well so the choice of
.web.js may lead to errors. Practically though, it is a potential future
problem that we do not have at the time of this writing.

https://github.com/jitsi/jitsi-meet/pull/1397 will take advantage of the
wider Flow use. The PR in question is huge at the time of this writing.
In order to reduce it, I'm extracting changes not directly related to
React-ifying the Toolbar.

https://github.com/jitsi/jitsi-meet/pull/1397 (React Toolbar) is huge at
the time of this writing. In order to reduce it, I'm extracting changes
not directly related to React-ifying the Toolbar such as added jsdocs
and source code formatting.

fix(iframe_api): Passing config params is not working

Fix executeCommand race condition

deps: include styled-components package for @atlaskit components

@atlaskit components will all require styled-components in the
future. Including it now will remove the unmet peer
dependency warning during npm install and prevent future build
breakages that might occur from using a new @atlaskit component
that requires it.

Pull Request #1449

This is in preparation for an upcoming "audio only mode" feature. Setting last N
will also be required for it, so this patch factors out the action and makes it
public so other modules can reuse it.

In addition, if the value is set to undefined the configured default value (or
-1 if absent) is picked.

Moves native dialogs to use dialog container. Implements native Dialog that uses react native Prompt.

All z-indexes found in css files have been moved into css
variables. If the z-index is used only once, the variable
name will be the same as the selector it is used in. If
the z-index is used multiple times, then the plain name
of $zindex# was used. This allowed a more confident
moving down of the toolbar so that the new modal dialog,
with z-index 500, could display on top of it.

#1436

#1411

Replaces changeAvatarID, changeAvatarURL and changeEmail with
participantUpdated action.
participantUpdated can be fired for local user without id. This
fixes the problem with updating the local user before the user
join the conference which results in fix for failing to execute
commands for avatarID, avatarURL and email right after the iframe
api creates the iframe with Jitsi Meet.

If executeCommand('displayName') is executed before Jitsi Meet
is fully initialized some listeners were not added and the
display name was not changed.

edge: Add userMedia.edgeGrantPermissions in lang/main.json

doc: improve docs on external API constructor parameters

Set the video channel "last N" property to 0, thus making the client not receive
any remote video.

Filmstrip overlays

Fixes settings panel translation.

Strings are not translated when opening the settings side panel. It was that we were creating settings panel html after i18n library had loaded and had translated the rest of the html.
The element selecting the current language was also not translated, which end up with no selection in the UI for the current language.

In this case makes more sense to have overlay frame included in every overlay instead
of abstract class that implements the overlay frame and have to be extended by every
overlay. In addition, mapStateToProps isn't working well with inheritance.

Sends analytics event every time speaker stats is open.

build: remove no longer needed Makefile rule

- we now use pinned dependencies, so there is no need to run npm update
- AFAICT the node-sass workaround is no longer needed

Uses leavingIDs to more efficiently iterate over remote videos.

P2P ver2

Will show (direct) next to the UPD or TCP transport type if we're
running on P2P connection.

* Handle last n in the client

* fix(LargeVideoManager.js): Fixes check for low bandwidth. Needs more work

* fix(LargeVideoManager.js): Fixes the Shared Video test.

* fix(LargeVideoManager): Fix shared video view and remove last n checks.

* fix(LargeVideoManager): Fixes jsdoc comment

* fix(RemoteVideo): Fix connection status check

* fix(LargeVideoManager,RemoteVideo): Syntax errors

Moves all static content/files in a new folder.