[MERGE] forward port of branch saas-6 up to 589751ca

addons/account/models/account_invoice.py

addons/account_asset/account_asset.py

addons/crm/crm_action_rule_demo.xml

addons/gamification_sale_crm/sale_crm_goals.xml

addons/mrp_repair/mrp_repair.py

addons/payment_ogone/models/ogone.py

addons/point_of_sale/report/pos_details.py

addons/point_of_sale/static/src/js/models.js

addons/purchase/purchase.py

addons/sale/sale.py

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

addons/website_mass_mailing/controllers/main.py

addons/website_sale/controllers/main.py

addons/website_sale/data/demo.xml

doc/cla/corporate/AetnaSoftwares.md

doc/cla/corporate/devcocolombia.md

doc/cla/corporate/therp.md