[MERGE] forward port branch 9.0 up to cb1ae535

addons/account/models/account_bank_statement.py

addons/account/models/account_invoice.py

addons/l10n_be_intrastat/wizard/xml_decl.py

addons/payment_paypal/models/res_company.py

addons/project/project.py

addons/project_issue/project_issue.py

addons/purchase/invoice.py

addons/purchase/purchase.py

addons/sale_service/models/sale_service.py

addons/stock/stock.py

addons/stock_dropshipping/__init__.py

addons/stock_dropshipping/models/__init__.py

addons/stock_dropshipping/models/stock_dropshipping.py

addons/web/controllers/main.py

addons/web/static/src/js/views/form_widgets.js

addons/web/static/src/js/views/pivot_view.js

addons/web/views/database_manager.html

addons/web_tip/static/src/js/tip.js

addons/website/models/website.py

addons/website/views/website_templates.xml