Fix Google ads to work on SSL

www/google-ads.inc.html

@@ -11,7 +11,7 @@
             //-->
         </script>
         <script type="text/javascript"
-            src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
+            src="//pagead2.googlesyndication.com/pagead/show_ads.js">
         </script>
     </div>
 {% endmacro %}
@@ -27,7 +27,7 @@
             //-->
         </script>
         <script type="text/javascript"
-            src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
+            src="//pagead2.googlesyndication.com/pagead/show_ads.js">
         </script>
     </div>
-{% endmacro %}
+{% endmacro %}