Paybill no results fix

When a statement from the Mpesa paybill platform return no results it will instead return a semi result stating "No records to display".
This would result in an "unknown" transaction being registered.
This flaw has been fixed - the html scraber now proberly detects and ignores these no result transaction rows.

In addition initial work on Airtel Paybill, and mobile money in Somalia has been included.