Test plan:
1) Go to admin home, note there is new Debit types page in Accounting
section
2) Go to any other admin page and confirm there is link to Debit types
in the admin menu as well
3) Go to Debit types page
4) You should see a datatable listing existing debit types, ensure they
are working as expected.
5) Try to create, edit and delete some debit types. Note: Some debit
types cannot be deleted as they are needed for koha functionality.