feature 2368: also add canonical URL on index page.

git-svn-id: http://piwigo.org/svn/trunk@13062 68402e56-0260-453c-a942-63ccdbb3a9ee

index.php

@@ -89,6 +89,8 @@ if (isset($_GET['caddie']))
   redirect(duplicate_index_url());
 }
 
+$template->assign('U_CANONICAL', duplicate_index_url());
+
 //----------------------------------------------------- template initialization
 //
 // Start output of page