Wordpress multisite - plugin urls broken

We have wordpress running multisite and we have problem with plugin urls.

For example: http://kesarenki.fi/
in console you can see:
GET http://kesarenki.fis/sitepress-multilingual-cms/res/css/language-selector.css?v=3.0.2-a net::ERR_NAME_NOT_RESOLVED kesarenki.fi/:18
GET http://kesarenki.fi7/includes/css/styles.css?ver=3.7.2 net::ERR_NAME_NOT_RESOLVED kesarenki.fi/:47
GET http://kesarenki.fir/rs-plugin/css/settings.css?ver=3.8.1 net::ERR_NAME_NOT_RESOLVED kesarenki.fi/:48
GET http://kesarenki.fir/rs-plugin/css/captions.css?ver=3.8.1 net::ERR_NAME_NOT_RESOLVED kesarenki.fi/:49
GET http://kesarenki.fir/rs-plugin/js/jquery.themepunch.revolution.min.js?ver=3.8.1 net::ERR_NAME_NOT_RESOLVED kesarenki.fi/:125
GET http://kesarenki.fir/images/transparent.png net::ERR_NAME_NOT_RESOLVED kesarenki.fi/:233
GET http://kesarenki.fi7/includes/js/jquery.form.min.js?ver=3.50.0-2014.02.05 net::ERR_NAME_NOT_RESOLVED kesarenki.fi/:417
GET http://kesarenki.fi7/includes/js/scripts.js?ver=3.7.2 net::ERR_NAME_NOT_RESOLVED kesarenki.fi/:423
GET http://kesarenki.fis/sitepress-multilingual-cms/res/js/sitepress.js?ver=3.8.1 net::ERR_NAME_NOT_RESOLVED

It seems wordpress can't handle plugin url and we can't figure out what is missing in our config.

Our wp-config file (without comments and passwords):

define( 'DISALLOW_FILE_EDIT', true );
define( 'WP_CONTENT_DIR', '/home/atflowo/public_html/atf-content' );
define( 'WP_CONTENT_URL', 'http://www.atflow.org/atf-content' );
define( 'WP_PLUGIN_DIR', '/home/atflowo/public_html/atf-content/plugins' );
define( 'WP_PLUGIN_URL', $_SERVER['host'].'/atf-content/plugins' );
define('DB_CHARSET', 'utf8');
define('DB_COLLATE', 'utf8_swedish_ci');
$table_prefix = 'atfloworg_';
define ('WPLANG', 'fi');
define('WP_DEBUG', false);
define('WP_ALLOW_MULTISITE', true);
define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', true);
define('DOMAIN_CURRENT_SITE', 'atflow.org');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);
define( 'SUNRISE', 'on' );
if ( !defined('ABSPATH') )
define('ABSPATH', dirname(__FILE__) . '/');
require_once(ABSPATH . 'wp-settings.php');