[MERGE] Forward-port of latest saas-4 fixes, up to 04528512

.gitignore

addons/account/account_invoice_view.xml

addons/account/report/account_aged_partner_balance.py

addons/account/views/report_invoice.xml

addons/account/views/report_overdue.xml

...ns/account_analytic_analysis/account_analytic_analysis.py

...ount_analytic_analysis/account_analytic_analysis_view.xml

addons/account_budget/account_budget.py

addons/account_followup/views/report_followup.xml

addons/base_gengo/doc/changelog.rst

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

addons/delivery/delivery.py

addons/hr_payroll/views/report_payslip.xml

addons/hr_recruitment/hr_recruitment.py

addons/lunch/views/report_lunchorder.xml

addons/mail/mail_thread.py

addons/mail/static/src/js/mail.js

addons/mail/static/src/xml/mail.xml

addons/mass_mailing/models/mass_mailing.py

addons/mrp_repair/views/report_mrprepairorder.xml