WIP: Improve User model performances (#10832)

* wip: define items as mixed objects

* add default owned gear

* mark modified

* more mark modified

* more mark modified

* more mark modified

* more mark modified

* fix common tests

* fix common tests

* update mongoose

* add itemsUtils

* use new util function in hall controller

* add tests for items utils

* update website/server to mark all items as modified

* start updating common code

* update login incentives

* update unlock

* remove changes to package-lock.json

* remove changes to package.json

website/common/script/fns/ultimateGear.js

@@ -4,7 +4,7 @@ import reduce from 'lodash/reduce';
 import includes from 'lodash/includes';
 
 module.exports = function ultimateGear (user) {
-  let owned = typeof window !== 'undefined' ? user.items.gear.owned : user.items.gear.owned.toObject();
+  let owned = user.items.gear.owned.toObject ? user.items.gear.owned.toObject() : user.items.gear.owned;
 
   content.classes.forEach((klass) => {
     if (user.achievements.ultimateGearSets[klass] !== true) {