Adding the current doc version as an additional parameter for the search

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

@@ -156,6 +156,7 @@
         '003065520604945464838:izzukx8-qba', customSearchOptions);
         customSearchControl.setResultSetSize(google.search.Search.FILTERED_CSE_RESULTSET);
         customSearchControl.draw('cse');
+        customSearchControl.setSearchStartingCallback(this, function(c, s, q) { s.setQueryAddition("{{ version|e }}"); });
     }, true);
 </script>
 {%- if include_analytics %}