The PDF with barcode actions is now easily accessible from the
Inventory settings page.
Thus we remove it from the documentation (and it's easier to avoid any
issue across versions).
Closes#318
Now the PAC only allow cancel test with 2 VATs, TCM970625MB1 and
MAG041126GT8.
How the VAT is related with the certificate file, was updated the demo
files that are provided in the documentation to allow test the flow
complete.
Closes#297