INSTALLED_APPS = ('grappelli', 'django.contrib.admin',
    'django.contrib.auth', 'django.contrib.contenttypes',
    'django.contrib.sessions', 'django.contrib.messages',
    'django.contrib.staticfiles', 'django.contrib.humanize',
    'grappelli.dashboard', 'mptt', 'sekizai', 'pytils', 'sorl.thumbnail',
    'sefaro.apps.utils', 'sefaro.apps.seo', 'sefaro.apps.staticpages',
    'sefaro.apps.statictext', 'sefaro.apps.usersettings',
    'sefaro.apps.navigation', 'sefaro.apps.slideshow', 'articles')
Django 1.7 app config ImportError: No module named appname.apps