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.

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.

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.

Authentication buttons no longer belong to the Toolbar.

Adds some safety checks for disabled contactlist.

Removing translateString forces using data-i18n attributes, to make sure we do not forget to set them. Missing data-i18n attributes is a problem with late loading where we can end up without translation, without text. Missing data-i18n attributes is also problem that strings will not be translated when changing language.
Fixes a bug in invite dialog, where remove password button was shown for non moderators.

Enable ESLint on jitsi-meet with the same configuration and the same
goals as in lib-jitsi-meet.

Includes showing 1 when user is alone in the room.

There is sometimes problems with cache and late loading of the translations, this commit avoids showing translation key in the contactlist title, by moving the parameter into the code.

The extension of the file modules/UI/side_pannels/chat/smileys.json
suggests that the format of the file is JSON. However, it contains
JavaScript RegExp instances which do not represent valid JSON. Such
discrepancies between file extension and format cause failures in
certain tools such as Webpack. Convert the file (both extension and
format) into a valid ES2015 module.

Uses the same display names in the contact list as in the thumbnails, for local and remote.

Receiving messages docks the toolbar to be able to see number of unread messages. We need to undock it when we read the messages. We skip undocking if we are not in video mode (on large), cause stuff like youtube video share is docking/undocking the toolbar.