erp5_catalog: New Catalog for ERP5.

We try to move from using SQLCatalog to ERP5Catalog as the default Catalog inside
ERP5. The major difference is use of Folder class as the base for Catalog from
Products.ERP5Type.Core

Significant changes:
	-Add dtml form for creating ERP5Catalog object
	-Inherit from Catalog class from Products.ZSQLCatalog.SQLCatalog instead of copy-pasting the whole code again.
	-Add allowed_types for ERP5Catalog tool
	-Monkey patch some property setters and getters to maintain consistency
	-Update id and title for ERP5Catlog while class initialization
	-Set declarative securities and solve some inheritance conflicts
	-Add isRADContent for ERP5Catalog Class
 	-Solve inheritence conflict for _setPropValue function in ERP5Catalog class
	-Add SQL Method portal_type in allowed_types for ERP5Catalog class
	-Override getCatalogMethodIds cause it uses global variable in SQLCatalog.Catalog
	-Redefine security declarations
	-Add functions for object_actions of Catalog portal_type in ERP5Catalog object
	-Add filter_dict and _properties attributes for compatibilty
	-isIndexable should be function instead of Accessor property for Catalog object

product/ERP5Catalog/__init__.py

@@ -38,8 +38,9 @@ document_classes = updateGlobals( this_module, globals(), permissions_module = P
 
 # Define object classes and tools
 from Tool import ArchiveTool
+from Document import ERP5Catalog
 import CatalogTool
-object_classes = ()
+object_classes = (ERP5Catalog.ERP5Catalog,)
 portal_tools = (CatalogTool.CatalogTool,
                 ArchiveTool.ArchiveTool)
 content_classes = ()