Acabei de atualizar para o Django v1.8 e testar minha configuração local antes de atualizar meu projeto. Recebi um aviso de reprovação que nunca havia visto antes, nem faz sentido para mim. Posso estar apenas ignorando algo ou entendendo mal a documentação.

/Users/neilhickman/Sites/guild/ankylosguild/apps/raiding/models.py:6: RemovedInDjango19Warning: Model class ankylosguild.apps.raiding.models.Difficulty doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Difficulty(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/raiding/models.py:21: RemovedInDjango19Warning: Model class ankylosguild.apps.raiding.models.Zone doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Zone(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/raiding/models.py:49: RemovedInDjango19Warning: Model class ankylosguild.apps.raiding.models.Boss doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Boss(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/raiding/models.py:79: RemovedInDjango19Warning: Model class ankylosguild.apps.raiding.models.Item doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Item(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/forum/models.py:14: RemovedInDjango19Warning: Model class ankylosguild.apps.forum.models.Category doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Category(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/forum/models.py:36: RemovedInDjango19Warning: Model class ankylosguild.apps.forum.models.Comment doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Comment(Sc,oreMixin, ProfileMixin, models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/forum/models.py:64: RemovedInDjango19Warning: Model class ankylosguild.apps.forum.models.Forum doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Forum(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/forum/models.py:88: RemovedInDjango19Warning: Model class ankylosguild.apps.forum.models.Post doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Post(ScoreMixin, ProfileMixin, models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/forum/models.py:119: RemovedInDjango19Warning: Model class ankylosguild.apps.forum.models.CommentPoint doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class CommentPoint(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/forum/models.py:127: RemovedInDjango19Warning: Model class ankylosguild.apps.forum.models.TopicPoint doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class TopicPoint(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/auctionhouse/models.py:10: RemovedInDjango19Warning: Model class ankylosguild.apps.auctionhouse.models.Auction doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Auction(models.Model):

/Users/neilhickman/Sites/guild/ankylosguild/apps/auctionhouse/models.py:83: RemovedInDjango19Warning: Model class ankylosguild.apps.auctionhouse.models.Bid doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Bid(models.Model):

Agora, isso coloca três perguntas para mim.

De acordo comdocumentação, Options.app_label não é um requisito, a menos que o modelo esteja fora do módulo de aplicativo, o que, no meu caso, não é. Em segundo lugar, esse comportamento foi preterido na versão 1.7, então por que isso é um problema?Os aplicativos estão todos na tupla INSTALLED_APPS, então certamente não pode ser isso?Por que os aplicativos não seriam carregados antes de serem chamados se tudo estiver na tupla INSTALLED_APPS?

Se estou realmente fazendo algo errado, qual é a maneira correta de fazê-lo, pois os documentos realmente não esclarecem o que está causando esse problema ou como corrigi-lo.