Bug 18335 - Check in: Make patron info in hold messages obey syspref AddressFormat

Bug 18335 - Check in: Make patron info in hold messages obey syspref AddressFormat

When checking in, information about patrons with a hold always display
in an US style. Address information should opey the system preference
AddressFormat

To reproduce:
- Set syspref AddressFormat to German style
- Check out an item to a patron A
- Put a hold on this item for patron B
- Check in item using the Check in field in page header
- Result: In message 'Hold found', address does not display in German
  style

To test:
- Apply patch
- Repeat steps above
- Verify that address displays as expected

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>