[MIGR] mail: migration to the new API

addons/account_accountant/account_accountant_data.xml

addons/account_voucher/account_voucher_data.xml

addons/base_action_rule/test_models.py

addons/calendar/calendar.py

addons/crm/crm_data.xml

addons/crm/crm_lead.py

addons/crm/crm_lead_demo.xml

addons/crm/res_config.py

addons/crm_helpdesk/report/crm_helpdesk_report.py

addons/crm_partner_assign/wizard/crm_forward_to_partner.py

addons/hr/hr_data.xml

addons/hr/res_users.py

addons/hr_evaluation/hr_evaluation_data.xml

addons/hr_expense/hr_expense_data.xml

addons/hr_holidays/hr_holidays_data.xml

addons/hr_recruitment/hr_recruitment.py

addons/hr_recruitment/hr_recruitment_data.xml

addons/hr_recruitment/hr_recruitment_demo.xml

addons/hr_recruitment/res_config.py

addons/hr_timesheet_sheet/hr_timesheet_sheet_data.xml