add hidden account, cart insert/delete

add hidden account support
add delete/payout buttons to carts
add backend product sales with pdf export
add frontend product sales with pdf export
add frontend ticket sales with pdf export

frontend/views/transfer/list.php

@@ -245,6 +245,7 @@ td.name{
 							<th>Fizetve</th>
 							<th>Kassza</th>
 							<th>Felhasználó</th>
+							<th>Vendég</th>
 							<th>Bérlet típus</th>
 							<th>Egység ár</th>
 							<th>Mennyiség</th>
@@ -258,6 +259,7 @@ td.name{
 	    						<td><?php echo $t['ticket_paid_at']?> </td>
 	    						<td><?php echo $t['account_name']?> </td>
 	    						<td><?php echo $t['user_name']?> </td>
+	    						<td><?php echo $t['customer_name']?> </td>
 	    						<td><?php echo $t['ticket_type_name'] ?></td>
 								<td class='money'><?php echo $t['ticket_item_price']?> Ft</td>
 								<td class='count'><?php echo $t['ticket_count']?> Db</td>