- 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>

templates/Classic/admin/ticket/tickets_reply.tpl

@@ -3,6 +3,7 @@ $header
 		<input type="hidden" name="s" value="$s" />
 		<input type="hidden" name="page" value="$page" />
 		<input type="hidden" name="action" value="$action" />
+		<input type="hidden" name="send" value="send" />
  		<input type="hidden" name="id" value="$id" />
 		<if 0 < $ticket_replies_count >
 		$ticket_replies