In the case newContent is used to add a new line, update/expand of simulation
should already be done by another interaction.
Requires ERP5Type >= r31695.

Acked-by: Łukasz Nowak

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@31709 20353a03-c40f-0410-a6d1-a30d3c3de9de