PAHMA-843: Barcode Files now processed in Python

The Upload Barcode Scan File now processes the files in Python and
builds the xml payloads. There are currently some issues with behavior
server-side (the records aren't actually updating, despite the creation
of lmi records and bi-lateral relations, which seems to imply that some
important information isn't actually being sent to the server). This
commit also includes a small fix to PAHMA-811 to prevent non-integer
objet counts, and updates to cswaDB and cswaMain to facilitate Barcode
Uploading and processing.