[IMP] project : remove worklog in task and all dependancy.

[IMP] project_timesheet : move timesheet fields.

[IMP]: remove timesheet condition.

[IMP]: add tree,kanban,graph view and change report.

[IMP]: add demo data

[IMP]: move set_remaining_time method and add fields in xml.

[IMP]: change query use method.

[IMP]: change xpath expr by name.

[IMP] project: move hours and rate related fields in project_timesheet

[IMP] project: move delegate fields in project_timesheet.

[IMP]: move do_delegate and change fields name, remove not necessary code.

[IMP]: project_issue move progress fields in project_task and improve test cases.

[IMP]: yml test case improve in sale_service.

[IMP]: add condtion for check dict in pad.py

[IMP]: minore improvement.

[IMP]: improve test case remove warning.

[IMP]: remove fields _create_service_task method in sale_service.

[IMP] Project: planned_hours,remaining_hours Fields again move in project and change for all dependence.

[IMP] prject: minor improvement for last changes.

[IMP]: planned_hours move gantt to graph.

[IMP] project : add dependency project_timesheet and remove project_task_work related method.

[IMP] project: remove hr_analytic_timesheet_id.

[IMP] project: osv.osv replace with osv.Model