VbzCart/coding/checkout

see also pieces/checkout

The checkout pages use a new set of form/field classes which might later be ported back into Ferreteria if I can figure out how they fit in.

The process of building and displaying a form includes these elements:

• Specifying field objects and making them available as needed (e.g. BuildFieldFor())
• Creating an array of fields to be displayed (e.g. BuildShipAddrTemplate(), BuildCardAddrTemplate())
  • This specifies the name and label text for each field.
• Loading the necessary fields so they're available for receiving form data (e.g. LoadControlsForPage())