tpl/tplimpl/embedded: Wrap the relevant templates with the privacy policy disable check

See #4616

tpl/tplimpl/embedded/templates/google_analytics.html

@@ -1,3 +1,5 @@
+{{- $pc := .Page.Site.PrivacyConfig.GoogleAnalytics -}}
+{{- if not $pc.Disable -}}
 {{ with .Site.GoogleAnalytics }}
 <script>
 (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
@@ -8,4 +10,5 @@ m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
 ga('create', '{{ . }}', 'auto');
 ga('send', 'pageview');
 </script>
-{{ end }}
+{{ end }}
+{{- end -}}