Implemented create#PurchaseShipmentInvoices service based on the create#SalesShipmentInvoices service; added SECA rule to call it on status change of Shipment to Delivered; updated automated tests for the same, tests run and passing
Merge remote-tracking branch 'upstream/master'
Default item description to empty string to freemarker doesn't blow up trying to find a static method
Use the encodeForXmlAttribute() method on the organization name in case it has characters like an ampersand
Added partTotalUnpaid to order display info
Expanded order and shipment display info to include invoiceIdSet
Merge pull request #5 from sssonline/master

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