Added a model for event state (including data migration, signal based

notifications, etc.)

dav_events/apps.py

@@ -1,5 +1,6 @@
 from django.core.exceptions import ImproperlyConfigured
 
+from . import signals
 from .config import AppConfig as _AppConfig, DefaultSetting
 
 DEFAULT_SETTINGS = (
@@ -28,3 +29,9 @@ class AppConfig(_AppConfig):
     name = 'dav_events'
     verbose_name = u'DAV Veranstaltungen'
     default_settings = DEFAULT_SETTINGS
+
+    def ready(self):
+        signals.event_submitted.connect(signals.notify_submitted_event)
+        signals.event_submitted.connect(signals.notify_to_accept_event)
+        signals.event_accepted.connect(signals.notify_accepted_event)
+        signals.event_accepted.connect(signals.notify_to_publish_event)