Payment Details entry; better validation/ non-validation of Bank/ Credit Card details

When entering Payment details the Payment Method selected indicates whether or not the Bank Transaction to be created will be exported to the Bank.

If it is to be exported then the Account/ Card Number, Name, Expiry Date etc must be entered and be valid. If it isn't being exported, then only if details are entered should they be validated.

Therefore better validation (and non-validation) routines have been applied to the following forms:

Account Close wizard
Account Disbursement
Account Payment wizard
Account Standard Transaction (where Payment Element)
Account Withdrawal wizard
Bank Transaction Edit