no meaning to have non existing icon order_line_icon.gif for Business Template portal type

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26430 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -4366,7 +4366,7 @@ class BusinessTemplate(XMLObject):
          , 'meta_type'      : meta_type
          , 'description'    : """\
 Business Template is a set of definitions, such as skins, portal types and categories. This is used to set up a new ERP5 site very efficiently."""
-         , 'icon'           : 'order_line_icon.gif'
+         , 'icon'           : 'file_icon.gif'
          , 'product'        : 'ERP5Type'
          , 'factory'        : 'addBusinessTemplate'
          , 'immediate_view' : 'BusinessTemplate_view'