Bug 15373: Changing Zip to ZIP on OPAC and Intranet

Bug 15373: Changing Zip to ZIP on OPAC and Intranet

To test:

1) Login to OPAC --> You personal details.
2) Ensure it says 'ZIP/Postal Code' under Main Address, Alternate Address and Alternate Contact
3) Login to Staff interface --> Go to a member's page (ie koha/members/memberentry.pl) --> Details.
4) Ensure it says 'ZIP/Postal Code' under Alternate address and Alternative contact
5) Click Edit
6) Ensure it says 'ZIP/Postal Code' under Main Address, Alternate Address and Alternate Contact

Signed-off-by: Barry Cannon <bc@interleaf.ie>
Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
NOTE: Tested together with second patch.

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