Modernize the test with portal_activities. This triggers another failure, but...

Modernize the test with portal_activities. This triggers another failure, but it is not a fault in this test itself. It is a problem in CMFCategory (or ERP5Type). The problem is that updateRelatedContent may be executed after reindexObject, and updateRelatedContent or notifyAfterUpdateRelatedContent does not call reindexObject. So the catalog becomes inconsistent.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@14504 20353a03-c40f-0410-a6d1-a30d3c3de9de