Fix broken SoapOrderPaymentService response construction
This PR fixes a bad parameter in the construction of the SoapOrderPaymentService
response. P_PAID_TO_DATE
is not a date, it is the amount, paid to date. Like, if someone paid $30 of their $40 total today, and tomorrow pay the other $10.
Please review: @ahoffmann @weizhong-wang @lloyd-carter @KJOYNER @SCBUMP