Closes #13369 (grafted from 1c267cd4cc2a87f17c6b2f2934a1fd81d8674b36) --HG-- branch : 7.0
Project Invoice Module ###################### The Project Invoice module adds invoice methods on project. The methods are: - Manual: Tryton doesn't create any invoice. - On Effort: The invoices are created based on the *Effort* hours for all children works with 100% progress. - On Progress: The invoices are create proportionally to the *Progress* of the *Effort* hours of each children work. - On Timesheet: The invoices are created based on the timesheets encoded on all children works.