Add module project_action_item.
Implement some suggestions of Daniel Reis :
- explain where to find the module hr_timesheet_task in module description
- add state "In Progress" and adapt the wizard and buttons
- add field "to_invoice" on action item, that will be copied to the timesheet
- change "Done with timesheet" to "Done" in the tree view.
Continue to implement the remarks of Daniel :
- add computed field timesheet_hours on project.action.item
- replace the native field 'planned_hours' on task by a computed field (sum of action items)
Update some strings and field names (Quantity -> Hours)
Flake8 validation
Add icon on button in tree view
Add related field projet_id
Now that we have both "todo" and "progress", the state field should always be visible.
[Usability] Put action items above timesheets, in the same tab
[Usability] implement some of the remarks of Daniel Reis :
- one menu entry instead of 2
- display "Worked Hours" in Tree view and re-order cols
[Usability] Larger display for the action description.
Merge pull request #2 from dreispt/add-project-action-item

[7.0] Add project action item