Bug 10297 - categorycode and branchcode should be required when adding patrons

categorycode and branchcode should show as required under all
circumstances, not just when they are included in the
BorrowerMandatoryField system preference. This patch adds the correct
classes and hints to those fields.

To test, view the patron entry form for a new or existing patron.
Category and Library should show that they are required.

Signed-off-by: David Cook <dcook@prosentient.com.au>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>