Bug 7540 [3.6.x] - add id values to the legends in the patron entry form

Bug 7540 [3.6.x] - add id values to the legends in the patron entry form

This adds the following IDs to the legends in the patron entry form:
 main_address_lgd contact_lgd alt_address_lgd alt_contact_lgd
 library_management_lgd library_setup_lgd opac_staff_login_lgd
 patron_messaging_prefs_lgd

With these in place, then jquery like:
$(document).ready(function(){
        $('#main_address_lgd').text('Postal Address');
        $('#alt_address_lgd').text('Residential Address');
});
in intranetuserjs can be used to rename things to taste.

Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>