Stop storing activitypub json in db entirely

fedireads/views.py

@@ -39,7 +39,7 @@ def home(request):
     # TODO: this is fundamentally not how the feed should work I think? it
     # should do something smart with inboxes. (in this implementation it would
     # show DMs meant for other local users)
-    activities = models.Activity.objects.filter(
+    activities = models.Status.objects.filter(
         user__in=following,
     ).select_subclasses().order_by(
         '-created_date'