Extend hold shelf expire date beyond closed dates

Extend hold shelf expire date beyond closed dates

If the shelf_expire_time on a hold would land on a closed date for the
pickup library, push the expire time out to just beyond the close date
range, similar to the circulation due date overlap logic.

In the current iteration, the time component of the date is pushed out
to the end of the day (23:59:59).  If this is not generally the desired
behavior, an org setting could be added to bypass this step so that the
time matches "now" (i.e. capture time) instead.

Signed-off-by: Bill Erickson <berick@esilibrary.com>