Merge pull request +11738 from c9/add-extra-guards-analytics

Add extra guards for users without id or with old uid

node_modules/c9/skip-analytics.js

@@ -13,6 +13,8 @@ define(function(require, exports, module) {
     function skipAnalytics(user, allowUnauthorized) {
         if (!user) return true;
 
+        if (!user.id && !user.uid) return true; // users without an id should never reach the Segment library
+        
         if (!allowUnauthorized && hasUnauthorizedId(user)) return true;
 
         if (hasInternalTestName(user)) return true;