[MERGE] project_*: fix and improve usability of app after saas-13 testing

addons/hr_timesheet/project_timesheet_view.xml

addons/project/__manifest__.py

addons/project/models/project.py

addons/project/report/project_report.py

addons/project/report/project_report_views.xml

addons/project/views/project_views.xml

addons/project_issue/models/project_issue.py

addons/project_issue/views/project_issue_views.xml

addons/project_issue/views/project_project_views.xml

addons/project_issue_sheet/__manifest__.py

addons/project_issue_sheet/models/project_issue.py

addons/rating_project/views/project_view.xml