- fix undefined index in customer_domains.php

- add possibility to disable form-buttons if not needed
- corrected ticket-categories order-counter begin-value
- beautify domains-add and e-mail add form for customers
- added various missing hidden-fields in templates (Classic-theme)

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>

lib/formfields/customer/domains/formfield.domains_add.php

@@ -26,7 +26,8 @@ return array(
 				'fields' => array(
 					'subdomain' => array(
 						'label' => $lng['domains']['domainname'],
-						'type' => 'text',
+						'type' => 'textul',
+						'ul_field' => '',
 						'has_nextto' => true
 					),
 					'domain' => array(