LP1752356 Offline expired patrons download date additions

LP1752356 Offline expired patrons download date additions

In offline mode when checking out for an expired patron, change
the error message so that the last date the blocklist was downloaded
is displayed along with the patron barcode

Signed-off-by: Mike Risher <mrisher@catalyte.io>
This code includes improvements made by Bill Erickson

 Changes to be committed:
	modified:   Open-ILS/src/templates/staff/offline-interface.tt2
	modified:   Open-ILS/web/js/ui/default/staff/offline.js
	modified:   Open-ILS/web/js/ui/default/staff/services/lovefield.js