Bug 3766: Cities/Towns only on one address

Bug 3766: Cities/Towns only on one address

This patch ties the alternate address and alternate contact address
fields in the patron entry form to the cities and towns data. This
provides a dropdown of predefined city data to these address fields.

To test, apply the patch and edit a patron record.

Test city selection for all three address fields: Main address,
alternate address, and alternate contact. Confirm that city selection
works correctly and that your changes are saved correctly.

Perform these tests with all AddressFormat options: French, German, and
US.

Signed-off-by: Liz Rea <wizzyrea@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>