Analytics: More / improved tracking (#10608)

* WIP(analytics): add / improve tracking

* fix(groups): revert attempt at tracking on group model

* fix(analytics): track questing based on user data

* each buy-operation now has a getItemType method - typo getItemKey - removed unneeded overrides

website/common/script/ops/buy/purchase.js

@@ -107,7 +107,7 @@ module.exports = function purchase (user, req = {}, analytics) {
     analytics.track('acquire item', {
       uuid: user._id,
       itemKey: key,
-      itemType: 'Market',
+      itemType: type,
       acquireMethod: 'Gems',
       gemCost: price * 4,
       quantityPurchased: quantity,