monoblue: link to branches on summary page stable

monoblue: link to branches on summary page

"Tags" and "Bookmarks" sections on this page already have the similar links,
and so does the "Branches" on summary page in gitweb, so let's do the same in
monoblue.

--- a/mercurial/templates/monoblue/summary.tmpl	Sun Jul 26 17:18:42 2015 +0800
+++ b/mercurial/templates/monoblue/summary.tmpl	Sun Jul 26 18:05:10 2015 +0800
@@ -66,11 +66,11 @@
         </tr>
     </table>
 
-    <h2 class="no-link">Branches</h2>
+    <h2><a href="{url|urlescape}branches{sessionvars%urlparameter}">Branches</a></h2>
     <table>
     {branches%branchentry}
         <tr class="light">
-          <td colspan="4"><a class="list"  href="#">...</a></td>
+          <td colspan="4"><a class="list" href="{url|urlescape}branches{sessionvars%urlparameter}">...</a></td>
         </tr>
     </table>
 {footer}