ESLint

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

modules/UI/etherpad/Etherpad.js

@@ -2,7 +2,6 @@
 
 import VideoLayout from "../videolayout/VideoLayout";
 import LargeContainer from '../videolayout/LargeContainer';
-import UIUtil from "../util/UIUtil";
 import UIEvents from "../../../service/UI/UIEvents";
 import FilmStrip from '../videolayout/FilmStrip';
 
@@ -101,6 +100,7 @@ class Etherpad extends LargeContainer {
         return document.getElementById('etherpad');
     }
 
+    // eslint-disable-next-line no-unused-vars
     resize (containerWidth, containerHeight, animate) {
         let height = containerHeight - FilmStrip.getFilmStripHeight();
         let width = containerWidth;