CAT-56 Offline Circ Loan Duration Mods

CAT-56 Offline Circ Loan Duration Mods

Remove options for 3 and 30 days.

Add options for same day, 42 days, and full year.

Merge in year handling from dev/berick/cat-56-offline-due-date-experiment.
Change ev.target.value handling for the non-option to allow for same-day
handling.

Signed-off-by: Kyle Huckins <khuckins@catalystdevworks.com>
 Changes to be committed:
	modified:   Open-ILS/web/opac/locale/en-US/lang.dtd
	modified:   Open-ILS/xul/staff_client/chrome/content/circ/offline_checkout.js
	modified:   Open-ILS/xul/staff_client/chrome/content/circ/offline_checkout.xul