[MERGE] forward port of branch 8.0 up to 66221968

addons/account/account_move_line.py

addons/calendar/calendar_data.xml

addons/crm_partner_assign/security/ir.model.access.csv

addons/gamification/i18n/gamification.pot

addons/gamification/models/goal.py

addons/hr_payroll/report/report_payslip_details.py

addons/sale/sale.py

addons/web/i18n/web.pot

addons/web/static/src/js/view_form.js

doc/cla/corporate/rocksolidsolutions.md

openerp/service/server.py