erp5_hr: improve add position application

bt5/erp5_hr/SkinTemplateItem/portal_skins/erp5_hr/PositionApplicationModule_addPositionApplication.py

 from erp5.component.module.DateUtils import addToDate
 from DateTime import DateTime
 requester = None
+if not first_name or not last_name:
+  raise ValueError('first or last name is not provided')
 for person in context.portal_catalog(portal_type='Person', title='%s %s'%(first_name, last_name)):
   if person.getFirstName() == first_name and person.getLastName() == last_name:
     requester = person
@@ -46,7 +48,7 @@ if web_message_date or web_message_text or web_message_title:
   if response_template:
     response = context.event_module.newContent(
       portal_type='Mail Message',
-      source=context.ERP5Site_getAuthenticatedMemberPersonValue(),
+      source_value=context.ERP5Site_getAuthenticatedMemberPersonValue(),
       destination_value=requester,
       title='Re: %s' % web_message_title,
       start_date=addToDate(web_message_date,to_add={'minute': 1}),
@@ -55,7 +57,12 @@ if web_message_date or web_message_text or web_message_title:
       content_type='Mail Message')
     response.Event_setTextContentFromNotificationMessage(
       reference=response_template,
-      substitution_method_parameter_dict=dict(reply_body= event.getReplyBody(),reply_subject= event.getReplySubject()))
+      substitution_method_parameter_dict=dict(mapping_dict = {'reply_body': event.getReplyBody(),
+                                                              'reply_subject': event.getReplySubject(),
+                                                              'sender_name': context.ERP5Site_getAuthenticatedMemberPersonValue().getTitle(),
+                                                              'recipient_first_name': first_name,
+                                                              'position_title':context.restrictedTraverse(position).getTitle()
+                                                             }))