merge r11040 from branch 2.2 to trunk

bug 1786 fixed: ability to prefilter the synchronize screen with a specific
album by clicking on the new "Synchronize" icon on album admin page or album
admin list.

This is not the solution proposed by Gotcha (ie a treeview to select the album
on the synchronize screen) but it solves the same problem.



git-svn-id: http://piwigo.org/svn/trunk@11041 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/cat_modify.php

@@ -270,6 +270,15 @@ else
                                     $category['cat_full_dir'] )
       )
     );
+
+  if ($conf['enable_synchronization'])
+  {
+    $template->assign(
+      'U_SYNC',
+      $base_url.'site_update&site=1&cat_id='.$category['id']
+      );
+  }
+
 }
 
 // representant management