erp5_core: use parallel list field in portal type view instead of multilistfield

Like this :
- we see immediately what is selected
- no risk to remove by mistake something already selected
- much more convenient to change
The only tiny drawback is that the look might be a bit different when many values are selected.
erp5_project: add journal category to task and task reports

This is useful for some reporting
erp5_project: allow to define items on task/task report lines

Items are used on tasks for generating reports