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

Till Brehm

2014-02-17 baa7f2736bc91ca3feaed685e8a67a46db4fbb98

 interface/web/sites/web_vhost_subdomain_edit.php

@@ -349,7 +349,7 @@
      if($app->tform->getCurrentTab() == 'domain') {

         // Check that domain (the subdomain part) is not empty
         if(!preg_match('/^[a-zA-Z0-9].+/',$this->dataRecord['domain'])) {
         if(!preg_match('/^[a-zA-Z0-9].*/',$this->dataRecord['domain'])) {
            $app->tform->errorMessage .= $app->tform->lng("subdomain_error_empty")."<br />";
         }