A solution would be to update all the <fmt:formatDate value="XXXXX" type="both" timeStyle="short"/> in the JSP and add the pattern attribute.
And if the pattern could be provided in the application_XX.properties, it would be perfect.
Check this page for the API:
http://java.sun.com/products/jsp/jstl/1.1/docs/tlddocs/fmt/formatDate.htmlA message in the application_XX.properties is retrieved in the JSP like this: <fmt:message key="XXXXXX"/>