modified regex so that only 0-9999 days are allowed as values

Author: ms217

interface/web/sites/form/web_vhost_domain.tform.php

@@ -922,13 +922,13 @@
                                 'datatype' => 'INTEGER',
                                 'formtype' => 'TEXT',
                                 'validators' => array (  0 => array ( 'type' => 'REGEX',
-                                                'regex' => '/^([0-9]{1,5})$/',
+                                                'regex' => '/^([0-9]{0,4})$/',
                                                 'errmsg'=> 'log_retention_error_regex'),
                                 ),
                                 'default' => '30',
                                 'value' => '',
                                 'width' => '4',
-                                'maxlength' => '6'
+                                'maxlength' => '4'
                         )
 			//#################################
 			// ENDE Datatable fields