Prodution test program: add field for manufacturer's ID
The production test program will read a barcode of CERN's production.
This contains a serial number.
Manufacturers likely will have their own production ID too. It would be
nice to also request that number and store it in the logfiles for
further use.
Also consider what happens for productions that are not for CERN (i.e.
CERN does not provide the barcodes).