Ensure anonymization of IP in GA (#3734)

app/assets/javascripts/initializers/initializeBaseTracking.js.erb

@@ -12,6 +12,7 @@ function initializeBaseTracking() {
     wait++;
     if (window.ga && ga.create) {
       ga('create', '<%= ApplicationConfig["GA_TRACKING_ID"] %>', 'auto');
+      ga('set', 'anonymizeIp', true);
       ga('send', 'pageview', location.pathname + location.search);
       clearInterval(waitingOnGA);
       logImpressions();

app/views/pages/badge.html.erb

@@ -116,6 +116,7 @@
   })(window, document, 'script', 'https://www.google-analytics.com/analytics.js', 'ga');
 
   ga('create', '<%= ApplicationConfig["GA_TRACKING_ID"] %>', 'auto');
+  ga('set', 'anonymizeIp', true);
   ga('send', 'pageview');
   ga('send', 'event', 'view', '/badge version impression', '<%= @html_variant.name %>', null);
 </script>