Fixed vhostsubdomain not empty regex check to allow 1 char subdomains.

Till Brehm

2014-02-17 baa7f2736bc91ca3feaed685e8a67a46db4fbb98

 interface/web/admin/lib/lang/cz_language_edit.lng

@@ -7,4 +7,3 @@
$wb['btn_cancel_txt'] = 'Zpět';
?>