Enabled KLE seeding
Enabled casacde on delete on contract reference
Removed unused directives
Added todo comment
Enabled cascading delete
Revert "Enabled cascading delete"

This reverts commit 9d41e9e28a4ff9099967d8eed536d337845d9962.
Merge pull request #101 from os2kitos/426-contract-eco-cascade-fix

426 contract eco cascade fix