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

Till Brehm

2014-02-17 baa7f2736bc91ca3feaed685e8a67a46db4fbb98

 interface/lib/config.inc.php

@@ -44,7 +44,7 @@

//** Application
define('ISPC_APP_TITLE', 'ISPConfig');
define('ISPC_APP_VERSION', '3.0.5.3');
define('ISPC_APP_VERSION', '3.0.5.4dev');
define('DEVSYSTEM', 0);