#152 i18nfolder permissions: edit id only as manager

[preimer]

I have created a role with the permissions
'Edit portal I18N folders',
'Manage properties',
'Modify portal content'
and a few others, which are not relevant to tis problem
(i hope)
I am able to add all kind of items to the plone site,
but when trying to add a i18nfolder, i can only edit
the title and description.
When i try to change the id to something other than the
autogenerated one i get an "Insufficient privileges"
error message