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.

Removes storing avatarURL in localstorage and retrieving it.