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/2013/20130307_normalize_algo_values.js

@@ -0,0 +1,46 @@
+// mongo habitrpg ./node_modules/underscore/underscore.js ./migrations/20130307_normalize_algo_values.js
+
+/**
+ * Users were experiencing a lot of extreme Exp multiplication (https://github.com/lefnire/habitrpg/issues/594).
+ * This sets things straight, and in preparation for another algorithm overhaul
+ */
+db.users.find().forEach(function (user) {
+  if (user.stats.exp >= 3580) {
+    user.stats.exp = 0;
+  }
+
+  if (user.stats.lvl > 100) {
+    user.stats.lvl = 100;
+  }
+
+  _.each(user.tasks, function (task, key) {
+    // remove corrupt tasks
+    if (!task) {
+      delete user.tasks[key];
+      return;
+    }
+
+    // Fix busted values
+    if (task.value > 21.27) {
+      task.value = 21.27;
+    } else if (task.value < -47.27) {
+      task.value = -47.27;
+    }
+  });
+
+  try {
+    db.users.update(
+      {_id: user._id},
+      {$set:
+                {
+                  'stats.lvl': user.stats.lvl,
+                  'stats.exp': user.stats.exp,
+                  tasks: user.tasks,
+                },
+      },
+      {multi: true}
+    );
+  } catch (e) {
+    print(e);
+  }
+});