way it's done in invoices list)

Fix: [ bug #1792 ] Users are not allowed to see margins module index page when no product view permission is enabled

in right format (the bug was in propale/order/invoice extrafields,
mainly visible with 2 datetime extrafields)

100%) on a line

invoice from order

This reverts commit 756b1d31.

Without this, a new task is never executed (because without datenextrun defined)

Fix: Warning message not translated