[MERGE] forward port branch 12.0 up to 0e72b983

MANIFEST.in

addons/account/models/account_invoice.py

addons/account/models/account_move.py

addons/account/models/account_reconcile_model.py

addons/account/wizard/account_invoice_send_views.xml

addons/account_voucher/models/account_voucher.py

addons/event_sale/models/sale_order.py

addons/hr_expense/models/hr_expense.py

addons/hr_holidays/models/hr_leave.py

addons/hr_holidays/models/hr_leave_type.py

addons/hr_holidays/tests/test_access_rights.py

addons/hr_holidays/tests/test_accrual_allocations.py

addons/hr_holidays/tests/test_holidays_flow.py

addons/hr_holidays/tests/test_hr_leave_type.py

addons/hr_holidays/tests/test_leave_requests.py

addons/l10n_ca/data/account.account.template.csv

addons/l10n_do/data/account.account.template.csv

addons/l10n_mn/data/account.chart.template.csv

addons/l10n_mn/data/account_chart_template_data.xml

addons/l10n_ua/data/account.account.template.csv