Added Payment rounding for online pricing and database submission.

ADP table subtotal was giving an 'out of range' error.
So now the subtotal is run through the PHP function `number_format`.
Update to VISA debit numbers.
Now checks for '4519' and '4724' as well.
Merge branch 'hotfix/OutOfRangeAdSubmission'

* hotfix/OutOfRangeAdSubmission:
  Update to VISA debit numbers. Now checks for '4519' and '4724' as well.
  Added Payment rounding for online pricing and database submission.