* Add participantRoleChanged event to external API

* Update API documentation

* Remove unneeded whitespace

* Remove more unneeded whitespace

* Fix jsdoc formatting

* Fix jsdoc formatting

Starting from version 74, firefox need to be explicitly allowed to capture the screen from an iframe for screensharing. This new Feature-Policy is called "display-capture".
See: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Feature-Policy/display-capture

* Adds an option to set email through iframe API init and to stats.

* Simplifies configuring email and displayName in stats.

Removes enableStatsID as not needed as when off we are sending as callstats id xmpp resource which is unique per call and id must be something that sticks between calls (callstatsUsername).

* Adds email and displayName in stats config for mobile.

* chore(deps): Updates lib-jitsi-meet to latest dd31f0a.

* Removes enableStatsID from config and whitelist.

This is for other applications to use, and it's currently only used for logging
1 line, so use console.error.

* Get participant specific video element

We now have the ability to select the video element for specific participants. I'm tweaking the jitsi-meet-electron app for my use case. I need to open Always On Top windows for specific participants, so the current _getLargeVideo() wont suffice.

I made a post about this in the Developers section on the Jitsi Community Forum, but it got blocked by Akismet.

* Add dots at end of sentence.

* Fixed ESlint errors and add additional check for iframe.

* Use _myUserID instead of string.

* Return the local video by default if participantId is undefined.

* Fixed mistake in string template.

Fixes: https://github.com/jitsi/jitsi-meet/issues/4049

- Use actions to notify the rest of the app that
  a mic or camera error has occurred
- Use middleware to respond to those notifications
  of errors by showing in-app notifications and
  notifying the external api

Adds a new event fired when Jitsi Meet shows the feedback prompt.

* feat(screenshare): support remote wireless screensharing

- Pass events to the ProxyConnectionService so it can
  handle establishing a peer connection so a remote
  participant, not in the conference, can send a
  video stream to the local participant to use as a
  local desktop stream.
- Modify the existing start screensharing flow to accept
  a desktop stream instead of always trying to create one.

* adjust ProxyConnectionService for lib review changes

Spot will need a way to submit call feedback using the iframe
api. For now expose a method on conference.js to submit that
feedback. Exposing on conference.js looks to be the existing
pattern... Also add an event to notify consumers of the iframe
api that feedback was submitted, as postMessage is async
and the notification can at least give some guarantee maybe.

I haven't updated documentation yet as I'm not confident
about this api.

ESLint 4.8.0 discovers a lot of error related to formatting. While I
tried to fix as many of them as possible, a portion of them actually go
against our coding style. In such a case, I've disabled the indent rule
which effectively leaves it as it was before ESLint 4.8.0.

Additionally, remove jshint because it's becoming a nuisance with its
lack of understanding of ES2015+.

In Chrome M63 a warning is shown, permissions won't be automatically allowed
afterwards. Reference:
https://sites.google.com/a/chromium.org/dev/Home/chromium-security/deprecating-permissions-in-cross-origin-iframes

Setting this early makes us future proof, while working with current versions
too: Chrome < 63 gives an error because it doesn't understand the option and
Firefox seems to ignore it, so both continue to work as before.

In certain scenarios we do need to import files instead of features but
even then it is our coding style to not write the file extension.