Just ignore site properties if they exist already.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@3462 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -655,8 +655,9 @@ class SitePropertyTemplateItem(BaseTemplateItem):
     p = context.getPortalObject()
     for id,property in self._archive.items():
       if p.hasProperty(id):
+        continue
         # Too much???
-        raise TemplateConflictError, 'the property %s already exists' % id
+        #raise TemplateConflictError, 'the property %s already exists' % id
       p._setProperty(id, property['value'], type=property['type'])
 
   def uninstall(self, context, **kw):