Specify keep depending on the parameter update.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@4883 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/ERP5Site.py

@@ -684,7 +684,11 @@ class ERP5Generator(PortalGenerator):
           # Initialize Activities
           portal_activities = getToolByName(p, 'portal_activities', None)
           if portal_activities is not None:
-              portal_activities.manageClearActivities()
+            if kw.get('update', 0):
+              keep = 1
+            else:
+              keep = 0
+            portal_activities.manageClearActivities(keep=keep)
 
     def setupTemplateTool(self, p, **kw):
       """Setup the Template Tool. Security must be set strictly.