we only want to set options to None when not using firefox, but we use firefox
by default. See dicussion on nexedi/erp5@17e1c262 (comment 136933)

This reverts commit e50d05af.

Do not access form submission REQUEST from the listbox list method,
as it is rendered asynchronously in ERP5JS

This reverts commit 35b2c024.

Allow edition in the new UI