In the Invoicing dashboard, the "Average Invoice" scorecoard displays the wrong amount of invoices. It displays the number of "account.invoice.report" lines. This commit fixes the issue by displaying the count_unique measure of "move_id" task 3180524 closes odoo/odoo#120322 X-original-commit: 6232896fe06640de6d461e645811673fe27481aa Signed-off-by: Rémi Rahir (rar) <rar@odoo.com> Signed-off-by: Lucas Lefèvre (lul) <lul@odoo.com>