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

migrations/archive/2014/20141117_consecutive_months.js

@@ -0,0 +1,20 @@
+// IMPORTANT NOTE: this migration was written when we were using version 3 of lodash.
+// We've now upgraded to lodash v4 but the code used in this migration has not been
+// adapted to work with it. Before this migration is used again any lodash method should
+// be checked for compatibility against the v4 changelog and changed if necessary.
+// https://github.com/lodash/lodash/wiki/Changelog#v400
+
+// require moment, lodash
+db.users.find(
+  {'purchased.plan.customerId': {$ne: null}},
+  {_id: 1, 'purchased.plan': 1}
+).forEach(function (user) {
+  let p = user.purchased.plan,
+    latestMonth = p.dateTerminated  || new Date(), // their last sub date, or on-going (now)
+    count = moment(latestMonth).diff(p.dateCreated, 'months');
+  db.users.update({_id: user._id}, {$set: {
+    'purchased.plan.consecutive.count': count,
+    'purchased.plan.consecutive.gemCapExtra': _.min([Math.floor(count / 3) * 5, 25]),
+    'purchased.plan.consecutive.trinkets': Math.floor(count / 3),
+  }});
+});