slapos_crm: Replace immediateReindexObject call

Probably incomplete as we need to check for activities.

master/bt5/slapos_crm/SkinTemplateItem/portal_skins/slapos_crm_monitoring/SupportRequest_trySendNotificationMessage.py

@@ -12,6 +12,13 @@ if last_event:
   # User has already been notified for this problem.
   return last_event
 
+transactional_event = context.REQUEST.get("support_request_notified_item", None)
+
+if transactional_event is not None:
+  if (transactional_event.getFollowUpUid() == support_request.getUid()) and \
+    (transactional_event.getTitle() == message_title):
+    return transactional_event
+
 event = portal.event_module.slapos_crm_web_message_template.\
   Base_createCloneDocument(batch_mode=1)
 
@@ -27,6 +34,7 @@ event.edit(
 event.stop()
 event.deliver()
 
-event.immediateReindexObject()
+support_request.serialize()
+context.REQUEST.set("support_request_notified_item", event)
 
 return event