Do not allow BusinessTemplate to be included in BusinessTemplate itself.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@1111 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -326,7 +326,7 @@ Business Template is a set of definitions, such as skins, portal types and categ
          , 'factory'        : 'addBusinessTemplate'
          , 'immediate_view' : 'BusinessTemplate_view'
          , 'allow_discussion'     : 1
-         , 'allowed_content_types': ('BusinessTemplate',
+         , 'allowed_content_types': (
                                       )
          , 'filter_content_types' : 1
          , 'global_allow'   : 1