Display iPayment TRX number on Order Details (creditcard)

[jackcaveman]

The TRX number from iPayment is important when searching for refunds in the iPayment backend. The ERS order number is not searchable in the iPayment backend. You can maybe put in the "Payment Detail" panel.

For example: https://prereg.eja.net/admin/order/detail/4619
ERS#: 6HR6M895
Name: Paula Mühlmeyer
TRX nr: 1-123909393 <-- I can search on this number
You can find this number in the return data from iPayment server when user has ordered with creditcard.