LP1207396 Patron self-registration web form

LP1207396 Patron self-registration web form

Web form for allowing patrons to submit thier own library registration
requests.  The form collects various bits of user data and creates a
pending user account, which has no privileges.  These pending accounts
must be approved and completed by staff from the staff client "Pending
Patrons" action in the Cirulation menu.

Control of whether to show a field, treat a field as required, show
example text, and validate the field format is managed with existing org
unit settings.

Signed-off-by: Bill Erickson <berick@esilibrary.com>