[FIX] payment: portal payment use newly generated reference
[FIX] payment: portal payment use newly generated reference

- When creating a transaction on the payment page of the portal, the
  transaction reference returned was incorrect.
  This commit return the newly created transaction's reference.

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo