Change file mode of backups that are made available for download to 0600.

Till Brehm

2016-06-27 65ee3af0845f20cd3ae4a3d0c2ee3ce865f7fc7c

 interface/lib/classes/listform_actions.inc.php

@@ -190,6 +190,7 @@
      return $rec;
   }

   /* TODO: maybe rewrite SQL */
   public function getQueryString($no_limit = false) {
      global $app;
      $sql_where = '';