[MERGE] forward port branch 9.0 up to eaf54656

addons/account_cash_basis_base_account/__init__.py

addons/account_cash_basis_base_account/__openerp__.py

...ount_cash_basis_base_account/account_partial_reconcile.py

addons/account_cash_basis_base_account/account_tax.py

...count_cash_basis_base_account/views/account_tax_views.xml

addons/account_voucher/models/account_voucher.py

addons/l10n_ca/data/l10n_ca_chart_data.xml

addons/l10n_fr_pos_cert/models/account_bank_statement.py

addons/purchase/test/fifo_price.yml

addons/stock_dropshipping/test/lifo_price.yml

doc/cla/individual/thomas-tankengine.md