LP#1918362 Unchanged workstation settings applied on every checkin

LP#1918362 Unchanged workstation settings applied on every checkin

* Stop attempting to save the Update Inventory setting on every
checkin - incorrect prefix & redundant (it's a modifier now)
* Stop saving the Strict Barcode setting on every checkin,
renewal, and checkout
* Save Strict Barcode on user interaction with its checkbox

To test:
1. confirm Strict Barcode and Do Inventory Update settings still
apply and are "sticky" on the Circulation->Checkin interface
2. confirm Strict Barcode still applies and is "sticky" on the
Circulation->Renew Items and Circulation->Checkout interfaces

Signed-off-by: Dan Briem <dbriem@wlsmail.org>
Signed-off-by: Jeff Davis <jdavis@sitka.bclibraries.ca>
Conflicts:
	Open-ILS/web/js/ui/default/staff/circ/checkin/app.js
Signed-off-by: Jane Sandberg <sandbej@linnbenton.edu>