Upgrade tool enhancement

The upgrade tool has been enhanced to clean up maintenance form and business object dependencies during its removal.

During upgrade, the following exception has been encountered:

Caused by: java.sql.SQLIntegrityConstraintViolationException: ORA-02292: integrity constraint (WORKBRAIN.FK_WBF_MFRM_ID) violated - child record found

To prevent failed upgrades, an upgrade.properties parameter named cascade.delete.tables has been added. This parameter specifies the list of soft cascade delete tables.