Remove "Test Case" user and reassign events to "Jack Vale", in order to create...

Remove "Test Case" user and reassign events to "Jack Vale", in order to create more meaningfull events for demo user.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45063 20353a03-c40f-0410-a6d1-a30d3c3de9de