search-google.html.tmpl: Calculate sitesearch from urlbase (#20)

Author: CyberShadow

template/en/default/search/search-google.html.tmpl

@@ -32,7 +32,7 @@
 <p>
 
 <form method="get" action="https://www.google.com/search" data-no-csrf>
-<input type="hidden" name="sitesearch" value="bugzilla.mozilla.org">
+<input type="hidden" name="sitesearch" value="[% urlbase.match('^([^:]*://)?(.*?)/?$').1 %]">
   <nobr>
     <input type="text" name="q" size="60" maxlength="255" value="">
     <input type="submit" value="Search">