[MERGE] forward port of branch 9.0 up to 27058c47

README.md

addons/account/models/account.py

addons/account/models/account_invoice.py

addons/account/models/account_move.py

addons/analytic/models/analytic.py

addons/base_import/models.py

addons/base_import/tests/test_cases.py

addons/crm/base_partner_merge_view.xml

addons/delivery/views/delivery_view.xml

addons/hr_timesheet_sheet/hr_timesheet_sheet_view.xml

addons/l10n_fr_hr_payroll/l10n_fr_hr_payroll_data.xml

addons/mail/models/mail_message.py

addons/mail/static/src/js/chat_manager.js

addons/mail/static/src/js/client_action.js

addons/mass_mailing/controllers/main.py

addons/mrp/mrp.py

addons/payment_ogone/models/ogone.py

addons/point_of_sale/static/src/js/screens.js

addons/product/pricelist.py

addons/product_visible_discount/product_visible_discount.py