UPD: dav_events: renamed utils method to roles.

dav_events/models/__init__.py

@@ -1,3 +1,4 @@
+from ..roles import get_system_user, get_ghost_user
 from .event import Event
 from .eventflag import EventFlag
 from .eventstatus import EventStatus

dav_events/models/event.py

@@ -16,10 +16,10 @@ from django.utils.encoding import python_2_unicode_compatible
 from django.utils.translation import get_language, ugettext_lazy as _
 from django_countries.fields import CountryField
 
+from . import get_ghost_user
 from .. import choices
 from .. import config
 from .. import signals
-from ..utils import get_ghost_user
 from ..workflow import DefaultWorkflow
 
 

dav_events/models/eventflag.py

@@ -4,7 +4,7 @@ from django.db import models
 from django.utils import timezone
 from django.utils.encoding import python_2_unicode_compatible
 
-from ..utils import get_ghost_user, get_system_user
+from . import get_ghost_user, get_system_user
 
 
 def get_system_user_id():