* rename CategoryDivergenceTester to CategoryMembershipDivergenceTester to avoid conflict with the existing divergence tester.
* add a configuration form for CategoryMembershipDivergenceTester.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@30728 20353a03-c40f-0410-a6d1-a30d3c3de9de