Bug 15675 - Add issue_id column to accountlines and use it for updating fines

Bug 15675 - Add issue_id column to accountlines and use it for updating fines

Right now, fines are updated based on the fine description. There are a
number of areas where this can go wrong ( date or time format changing,
title being modified, etc ). Now that issues has a unique
identifier, we should use that for selection and updating of fines.

Test Plan:
1) Apply this patch
2) Test creating and updating fines via fines.pl
   and checking in overdue items. No changes should be noted.
3) prove t/db_dependent/Circulation.t

Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Mirko Tietgen <mirko@abunchofthings.net>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com