[MERGE] forward port of branch saas-6 up to b87a93a0

addons/account/models/account_invoice.py

addons/product/product.py

addons/web/doc/search_view.rst

doc/cla/corporate/Seekda.md

doc/cla/individual/williamjmorenor.md

doc/reference/orm.rst

doc/reference/views.rst

openerp/addons/test_new_api/ir.model.access.csv

openerp/addons/test_new_api/models.py

openerp/addons/test_new_api/tests/test_onchange.py

openerp/addons/test_new_api/views.xml

openerp/fields.py

openerp/models.py