ERP5Site: make Unauthorized redirection work with CMF 2.3

Products.CMFCore.CookieCrumbler's redirect support was moved to
Products.CMFDefault in CMF 2.3, cf:
- CMFCore: 387bd379fd9655aa1462715a04b4664f5c54974a
- CMFDefault: d319a68e8299e42a76f605ad79383bb78db14031

Registering portal_actions allows CMFDefault to redirect correctly,
cf UnauthorizedView.__call__

product/ERP5/ERP5Site.py

@@ -338,7 +338,11 @@ class ERP5Site(FolderMixIn, CMFSite, CacheCookieMixin):
   def _registerMissingTools(self):
     from Products.CMFCore import interfaces, utils
     tool_id_list = ("portal_skins", "portal_types", "portal_membership",
-                    "portal_url", "portal_workflow")
+                    "portal_url", "portal_workflow",
+                    # Registering portal_actions allows CMFDefault 2.3 to
+                    # redirect correctly, cf UnauthorizedView.__call__
+                    # BBB: no longer required after we drop Products.CMFDefault
+                    "portal_actions")
     if None in map(self.get, tool_id_list):
       return False
     sm = self._components