add name param in comment_user email (legacy workflow)

wcs/formdef.py

@@ -570,6 +570,7 @@ link: [url]
         evolution = self.get_detailed_evolution(formdata)
 
         data = {
+            'name': self.name,
             'url': url,
             'evolution': evolution,
             'before': _(status_labels[old_status]),
@@ -775,7 +776,7 @@ A form just changed, you can consult it with this link:
 
 
 EmailsDirectory.register('comment_user', N_('Notification of comment to user'),
-        N_('Available variables: url, evolution'),
+        N_('Available variables: name, url, evolution'),
         category = N_('Workflow'),
         default_subject = N_('New comment on form'),
         default_body = N_('''\