This ticket is to backport ONLY the database changes from
SAK-31184 to 11.0.
This is necessary because
SAK-31184 increases the constraints used on the database side. Oracle tables do not allow for in-table modifications of constraints, so a conversion would be necessary. Backporting these database changes now (before the release of the feedback tool) negates the need for a conversion in the future (simplifying the upgrade process).
Note: Any servers running 11.x will need to handle the conversion manually; the easiest way is to delete the sakai_feedback table and let it re-create with auto-ddl.