Fix for "String could not be parsed as XML" in server part of aps installer.

Till Brehm

2015-03-06 27978b1082cf730da91a675b18bbe625f4c8cf39

 interface/web/admin/language_import.php

@@ -112,6 +112,7 @@

//* Check permissions for module
$app->auth->check_module_permissions('admin');
$app->auth->check_security_permissions('admin_allow_langedit');

//* This is only allowed for administrators
if(!$app->auth->is_admin()) die('only allowed for administrators.');