Option to generate lacking overdues on lost checkin

Option to generate lacking overdues on lost checkin

New org unit setting "circ.lost.generate_overdue_on_checkin".

This org unit setting enables retroactive overdue fine generation for
lost item checkin.  When enabled, the system will generate overdue fines
starting from the date of the last created overdue fine for the
circulation and working its way up to the checkin time or stopping at
the max fine amount (consistent with regular overdue fine generation).

This differs from the existing org unit setting
"circ.restore_overdue_on_lost_return", which only un-voids existing
overdue fines.

Consider an item whose due date is the 1st, that gets marked lost on the
7th, then checked in on the 14th.  If set,
"circ.restore_overdue_on_lost_return" would un-void the fines created up
to the 7th and "circ.lost.generate_overdue_on_checkin" would create new
overdue fines from the 7th up to the 14th (or up to the max fine
amount).

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Mike Rylander <mrylander@gmail.com>