Bug 14045: DB Changes

Bug 14045: DB Changes

This patch is the DB changes for the feature.
It adds 5 new columns named 'maxonsiteissueqty' to the following tables:
- branch_borrower_circ_rules
- default_borrower_circ_rules
- default_branch_circ_rules
- default_circ_rules
- issuingrules

It also adds the pref ConsiderOnSiteCheckoutsAsNormalCheckouts.

See main patch for more details.

Signed-off-by: Nicolas Legrand <nicolas.legrand@bulac.fr>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>