Update to statements and other minor items

modules/checkout/classes/Model/Checkout/Notify.php

@@ -21,7 +21,7 @@ class Model_Checkout_Notify extends ORM_OSB implements Invoicable {
 		),
 	);
 
-	public function invoice_item() {
+	public function invoice_item($item_type) {
 		return sprintf('Payment Fee: %s',$this->checkout->name);
 	}