  class Token(models.Model):
      """
      The default authorization token model.
      """
      key = models.CharField(max_length=40, primary_key=True)
      user = models.OneToOneField(AUTH_USER_MODEL, related_name='auth_token',
                                  on_delete=models.CASCADE)
      created = models.DateTimeField(auto_now_add=True)
  
      class Meta:
 
</s> remove                                 on_delete=models.CASCADE)
    created = models.DateTimeField(auto_now_add=True)
 </s> add                                 on_delete=models.CASCADE, verbose_name=_("User"))
    created = models.DateTimeField(_("Created"), auto_now_add=True) </s> remove     username = serializers.CharField()
    password = serializers.CharField(style={'input_type': 'password'})
 </s> add     username = serializers.CharField(label=_("Username"))
    password = serializers.CharField(label=_("Password"), style={'input_type': 'password'})
    key = models.CharField(_("Key"), max_length=40, primary_key=True)
  class Token(models.Model):
      """
      The default authorization token model.
      """
    key = models.CharField(_("Key"), max_length=40, primary_key=True)
      user = models.OneToOneField(AUTH_USER_MODEL, related_name='auth_token',
                                  on_delete=models.CASCADE)
      created = models.DateTimeField(auto_now_add=True)
  
      class Meta:
keep keep keep keep replace keep keep keep keep keep
 enhancement #3886 Internationalization in admin interface rest_framework.authtoken

+ verbose_name in models.Token fields
+ Meta-options verbose_name & verbose_name_plural
+ Labels in AuthTokenSerializer fields in case of usages in Brousable API
+ provide AppConfig class as described in django documentation with verbose_name came through ugettext_lazy 
rest_framework/authtoken/models.py