- various __all__

- serializer: track search, reorder module files
- autocomplete: allow simple string value selection
- playlist editor:
    - ui & flow improve
    - init data
    - save user settings
    - autocomplete
    - fix bugs
    - discard changes

aircox/models/signals.py

@@ -2,7 +2,7 @@ import pytz
 
 from django.contrib.auth.models import User, Group, Permission
 from django.db import transaction
-from django.db.models import F, signals
+from django.db.models import signals
 from django.dispatch import receiver
 from django.utils import timezone as tz