- added tab in order to see task reports on project
- added 3 reports,
- one to see tasks
- one for task or tasks reports if the task is validated
- one to see the difference between what was
planned at the beginning and what was done in reality

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@19655 20353a03-c40f-0410-a6d1-a30d3c3de9de