LP#1270289 Show cancel reason labels for lineitems/copies

LP#1270289 Show cancel reason labels for lineitems/copies

In the standard lineitem list page, display lineitem states as
translatable strings instead of displaying the raw lineitem state code.
Additionally, when the state is 'cancelled', display the cancel_reason
label instead of "cancelled" to help differentiate between canceled and
delayed items.

Similarly, display the cancel reason label for canceled copies in the
copy edit grid.

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Kathy Lussier <klussier@masslnc.org>