Upgrade tests tools and lint migrations and scripts (part 2) (#9998)

* upgrade gulp-babel

* upgrade babel-eslint

* upgrade eslint-friendly-formatter

* start upgrading chai

* start to upgrade eslint

* restore skipped tests

* start to upgrqde monk

* fix linting and remove unused file

* fix mocha notifications, and common tests

* fix unit tests

* start to fix initrgration tests

* more integration tests fixes

* upgrade monk to latest version

* lint /scripts

* migrations: start moving to /archive unused migrations and run eslint with --fix

* lint migrations

* fix more integration tests

* fix test

website/server/controllers/api-v3/challenges.js

@@ -434,11 +434,11 @@ api.getUserChallenges = {
     let challenges = await Challenge.find({
       $or: orOptions,
     })
-    .sort('-official -createdAt')
-    // see below why we're not using populate
-    // .populate('group', basicGroupFields)
-    // .populate('leader', nameFields)
-    .exec();
+      .sort('-official -createdAt')
+      // see below why we're not using populate
+      // .populate('group', basicGroupFields)
+      // .populate('leader', nameFields)
+      .exec();
 
     let resChals = challenges.map(challenge => challenge.toJSON());
     // Instead of populate we make a find call manually because of https://github.com/Automattic/mongoose/issues/3833