LP#1218597 TPAC self-reg DoB date format example message

LP#1218597 TPAC self-reg DoB date format example message

Provide an example DoB date format message.  Since the message may need
translating, it is provided as a template string and not an org unit
setting.  Note, however, that the Dojo widget inside the patron
registration UI, where self-reg data ultimately goes, requires
incoming/default date values to be in ISO8601 format.  It will not
accept locale-shaped dates.

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Chris Sharp <csharp@georgialibraries.org>