Avoid to load Google Custom Search API for offline docs.

akka-docs/_sphinx/themes/akka/layout.html

@@ -148,6 +148,7 @@
     </p>          
   </div>
 </div>
+{%- if include_analytics %}
 <script src="http://www.google.com/jsapi" type="text/javascript"></script>
 <script type="text/javascript">
     google.load('search', '1', {language : 'en', style : google.loader.themes.MINIMALIST});
@@ -163,7 +164,6 @@
     }
     }, true);
 </script>
-{%- if include_analytics %}
 <style type="text/css">
     .gsc-control-cse {
     font-family: Arial, sans-serif;