erp5_catalog: Solve inheritence conflict for _setPropValue function in ERP5Catalog class

product/ERP5Catalog/ERP5Catalog.py

@@ -82,6 +82,9 @@ class ERP5Catalog(Folder, Catalog):
   # Declarative Constructors
   constructors = (manage_addERP5CatalogForm, manage_addERP5Catalog,)
 
+  # Use functions inherited from SQLCatalog for property setters
+  _setPropValue = Catalog._setPropValue
+
   def __init__(self, id, title='', container=None):
     # Initialize both SQLCatalog as well as Folder
     Catalog.__init__(self, id, title='', container=None)