old_contents: from django.contrib import admin
  from django.contrib.auth.admin import UserAdmin
  from django.utils.translation import ugettext as _
  from guardian.admin import GuardedModelAdmin
  
  from userena.models import UserenaSignup
  from userena.utils import get_profile_model, get_user_model
  
  class UserenaSignupInline(admin.StackedInline):
      model = UserenaSignup
      max_num = 1
  
  class UserenaAdmin(UserAdmin, GuardedModelAdmin):
      inlines = [UserenaSignupInline, ]
      list_display = ('username', 'email', 'first_name', 'last_name',
                      'is_staff', 'is_active', 'date_joined')
      list_filter = ('is_staff', 'is_superuser', 'is_active')
  
  
  if settings.USERENA_REGISTER_USER:
      try:
          admin.site.unregister(get_user_model())
      except admin.sites.NotRegistered:
          pass
      
      admin.site.register(get_user_model(), UserenaAdmin)
      
  if settings.USERENA_REGISTER_PROFILE:    
      admin.site.register(get_profile_model())
  
new_contents: from django.contrib import admin
  from django.contrib.auth.admin import UserAdmin
  from django.utils.translation import ugettext as _
  from guardian.admin import GuardedModelAdmin
  
  from userena.models import UserenaSignup
  from userena import settings as userena_settings
  from userena.utils import get_profile_model, get_user_model
  
  class UserenaSignupInline(admin.StackedInline):
      model = UserenaSignup
      max_num = 1
  
  class UserenaAdmin(UserAdmin, GuardedModelAdmin):
      inlines = [UserenaSignupInline, ]
      list_display = ('username', 'email', 'first_name', 'last_name',
                      'is_staff', 'is_active', 'date_joined')
      list_filter = ('is_staff', 'is_superuser', 'is_active')
  
  
  if userena_settings.USERENA_REGISTER_USER:
      try:
          admin.site.unregister(get_user_model())
      except admin.sites.NotRegistered:
          pass
      
      admin.site.register(get_user_model(), UserenaAdmin)
      
  if userena_settings.USERENA_REGISTER_PROFILE:    
      admin.site.register(get_profile_model())
  
subject: Fix settings import