zope4: use getId() instead of __str__() for getAuthenticatedMember() value.

because __str__() returns id in Zope2 but returns login in Zope4.

bt5/erp5_user_tutorial_ui_test/SkinTemplateItem/portal_skins/erp5_user_tutorial_ui_test/Zuite_setUpIncomingEventTest.py

@@ -6,7 +6,7 @@ howto_dict = context.Zuite_getHowToInfo()
 isTransitionPossible = portal.portal_workflow.isTransitionPossible
 
 # in testExpressUserDocumentationIncomingEvent we relly that loged in user is an ERP5 Person
-logged_in_user = str(context.portal_membership.getAuthenticatedMember())
+logged_in_user = context.portal_membership.getAuthenticatedMember().getId()
 current_person = context.portal_catalog.getResultValue(portal_type='Person',
                                                        reference=logged_in_user)
 if current_person is None:

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Preference_disableOtherPreferences.py

@@ -9,7 +9,7 @@ if context.getPriority() != 3: # XXX 3 is Priority.USER
   return
 
 for preference in portal.portal_preferences.searchFolder(
-    viewable_owner={'query': str(portal.portal_membership.getAuthenticatedMember()), 'key': 'ExactMatch'},
+    viewable_owner={'query': portal.portal_membership.getAuthenticatedMember().getId(), 'key': 'ExactMatch'},
     portal_type=context.getPortalType()):
   preference = preference.getObject()
   assert portal.portal_membership.getAuthenticatedMember().allowed(preference, ['Owner', ]), preference