[I18N] *: update 16.0 source terms

.tx/config

addons/account/i18n/account.pot

addons/account_payment/i18n/account_payment.pot

addons/analytic/i18n/analytic.pot

addons/base_setup/i18n/base_setup.pot

addons/base_vat/i18n/base_vat.pot

addons/event/i18n/event.pot

addons/hr_expense/i18n/hr_expense.pot

addons/hr_holidays/i18n/hr_holidays.pot

addons/hr_presence/i18n/hr_presence.pot

addons/hr_timesheet/i18n/hr_timesheet.pot

...ns/hr_work_entry_contract/i18n/hr_work_entry_contract.pot

addons/mail/i18n/mail.pot

addons/mrp/i18n/mrp.pot

addons/point_of_sale/i18n/point_of_sale.pot

addons/pos_stripe/i18n/pos_stripe.pot

addons/project/i18n/project.pot

addons/purchase/i18n/purchase.pot

addons/purchase_price_diff/i18n/purchase_price_diff.pot

addons/sale/i18n/sale.pot