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/2015/20150906_groups_remove_deleted_users.js

@@ -0,0 +1,86 @@
+/*
+ * Remove deleted accounts from groups
+ */
+
+let mongo = require('mongoskin');
+let async = require('async');
+
+let dbserver = 'url';
+let dbname = 'dbname';
+let countGroups = 0;
+let countUsers = 0;
+
+let db = mongo.db(`${dbserver  }/${  dbname  }?auto_reconnect`);
+let dbUsers = db.collection('users');
+let dbGroups = db.collection('groups');
+
+console.log('Begins work on db');
+
+function findGroups (gt) {
+  let query = {};
+  if (gt) query._id = {$gt: gt};
+
+  console.log(query);
+
+  dbGroups.find(query, {
+    fields: {_id: 1, members: 1},
+    limit: 10000,
+    sort: {
+      _id: 1,
+    },
+  }).toArray(function (err, groups) {
+    if (err) throw err;
+
+    let lastGroup = null;
+    if (groups.length === 10000) {
+      lastGroup = groups[groups.length - 1];
+    }
+
+    async.eachLimit(groups, 3, function (group, cb1) {
+      countGroups++;
+      console.log('Group: ', countGroups, group._id);
+
+      let members = group.members;
+
+      // Remove users who deleted their account
+      async.eachLimit(members, 15, function (member, cb2) {
+        dbUsers.findOne({_id: member}, {fields: {_id: 1}}, function (err, user) {
+          if (err) return cb2(err);
+
+          if (!user) {
+            countUsers++;
+            console.log('User removed n. ', countUsers, 'user id ', member, 'group id ', group._id);
+
+            dbGroups.update({
+              _id: group._id,
+            }, {
+              $pull: {members: member},
+              $inc: {memberCount: -1},
+            }, {
+              multi: false,
+            }, function (err, res) {
+              if (err) return cb2(err);
+
+              console.log('Updated: ', res);
+              return cb2();
+            });
+          } else {
+            cb2();
+          }
+        });
+      }, function (err) {
+        if (err) return cb1(err);
+
+        cb1();
+      });
+    }, function (err) {
+      if (err) throw err;
+
+      if (lastGroup && lastGroup._id) {
+        findGroups(lastGroup._id);
+      }
+    });
+  });
+}
+
+findGroups();