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/ops/buy/hourglassPurchase.js

@@ -36,10 +36,12 @@ module.exports = function purchaseHourglass (user, req = {}, analytics) {
 
   if (type === 'pets') {
     user.items.pets[key] = 5;
+    if (user.markModified) user.markModified('items.pets');
   }
 
   if (type === 'mounts') {
     user.items.mounts[key] = true;
+    if (user.markModified) user.markModified('items.mounts');
   }
 
   if (analytics) {