Fixed a error in OS detection code for CentOS.

Till Brehm

2014-09-22 f02be96750e48859cc63f1f2b64a86a9202178b4

 interface/web/admin/software_package_install.php

@@ -33,6 +33,7 @@

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

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