Avoid using ERP5Site_getModuleItemList to list modules which doesn't work in virtual_hosting environment.
Avoid use allowedContentType on module to list portal_types. if user can not add them he will miss them.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@24501 20353a03-c40f-0410-a6d1-a30d3c3de9de