Merge pull request #556 from fahadhatib/develop

15/10/14 Exson: Fixed no receipt data displayed retrieved bugs for sales...
Merge pull request #557 from fahadhatib/develop

17/10/14 Exson: Add po line and due date result in OrderDetails.php.
New scripts for processing regular payments
Merge pull request #558 from timschofield/develop

New scripts for processing regular payments