Merge testKM & testKMGadget (move away from erp5_km). Clean up and use MixIn....

Merge testKM & testKMGadget (move away from erp5_km). Clean up and use MixIn. Add 'No ZODB' search test section (XXX).

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@44000 20353a03-c40f-0410-a6d1-a30d3c3de9de