[puzzles] Add puzzle model and hooks

vrobbler/apps/scrobbles/views.py

@@ -25,14 +25,13 @@ from rest_framework.decorators import (
     permission_classes,
 )
 from rest_framework.parsers import MultiPartParser
-from rest_framework.permissions import IsAuthenticated, AllowAny
+from rest_framework.permissions import IsAuthenticated
 from rest_framework.response import Response
 from scrobbles.api import serializers
 from scrobbles.constants import (
     LONG_PLAY_MEDIA,
     MANUAL_SCROBBLE_FNS,
     PLAY_AGAIN_MEDIA,
-    SCROBBLE_CONTENT_URLS,
 )
 from scrobbles.export import export_scrobbles
 from scrobbles.forms import ExportScrobbleForm, ScrobbleForm