Added published status.

dav_events/forms/events.py

@@ -70,7 +70,8 @@ class EventUpdateForm(forms.ModelForm):
     class Meta:
         model = models.Event
         fields = '__all__'
-        exclude = ('accepted', 'accepted_at', 'accepted_by')
+        exclude = ('accepted', 'accepted_at', 'accepted_by',
+                   'published', 'published_at', 'published_by',)
 
 
 class EventCreateForm(ChainedForm):