Fixes issues with unloading the page

app.js

 
 
     room.on(ConferenceEvents.USER_JOINED, function (id, user) {
-        console.error('USER %s connnected', id, user);
+        console.log('USER %s connnected', id, user);
         // FIXME email???
         APP.UI.addUser(id, user.getDisplayName());
     });
     room.on(ConferenceEvents.USER_LEFT, function (id, user) {
-        console.error('USER %s LEFT', id, user);
+        console.log('USER %s LEFT', id, user);
         APP.UI.removeUser(id, user.getDisplayName());
         APP.UI.stopPrezi(id);
     });
         if (track.isLocal()) { // skip local tracks
             return;
         }
-        console.error(
+        console.log(
             'REMOTE %s TRACK', track.getType(), track.getParticipantId()
         );
         APP.UI.addRemoteStream(track);
             return;
         }
 
-        console.error(
+        console.log(
             'REMOTE %s TRACK REMOVED', track.getType(), track.getParticipantId()
         );
 
         }
     );
 
-    $(window).bind('beforeunload', function () {
+    const unload = () => {
         room.leave();
-    });
+        connection.disconnect();
+    };
+    $(window).bind('beforeunload', unload );
+    $(window).bind('unload', unload );
 
     return new Promise(function (resolve, reject) {
         room.on(ConferenceEvents.CONFERENCE_JOINED, handleConferenceJoined);

libs/lib-jitsi-meet.js

 };
 
 ChatRoom.prototype.onPresence = function (pres) {
-    console.log(pres);
     var from = pres.getAttribute('from');
     // Parse roles.
     var member = {};
                     if (displayName && displayName.length > 0) {
                         this.eventEmitter.emit(XMPPEvents.DISPLAY_NAME_CHANGED, from, displayName);
                     }
-                    logger.info("Display name: " + displayName, pres);
                 }
                 break;
             case "userId":
                 var jibri = node;
                 break;
             case "call-control":
-                console.log(pres);
                 var att = node.attributes;
                 if(!att)
                     break;