'All customers', 'contract' => 'Contract', 'plan' => 'Package', 'instance' => 'Instance', 'since' => 'Customer since', 'vat_id' => 'VAT ID', 'write_invoice' => 'Write an invoice', 'requests' => 'Requests from the portal', 'no_requests' => 'No request so far.', 'answer' => 'Answer', 'mails' => 'Mail sent', 'no_mails' => 'Nothing has been sent to this customer yet.', 'all_mails' => 'All mail', 'by_hand' => 'By hand', ];