Update to latest tech-docs-template

Author: thomasleese

.template_version

@@ -1,3 +1,3 @@
 ---
-:remote: ''
-:revision: 822674acef01e86ae09f66c0e26984011b036b11
+:remote: https://github.com/alphagov/tech-docs-template.git
+:revision: 9e585e034554685f03ce0982ebbd1dd7c83d3800

source/layouts/_analytics.erb

@@ -5,6 +5,9 @@
   m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
   })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
 
+  ga('set', 'anonymizeIp', true);
+  ga('set', 'displayFeaturesTask', null);
+
   ga('create', '<%= config[:tech_docs][:ga_tracking_id] %>', 'auto');
   ga('send', 'pageview');
   </script>