title: Cannot find reference 'DjangoWhiteNoise' in 'django.py' in wsgi.py
body: <p>Im about to deploy my django-app to heroku. I will then use whitenoise to handle the static files. The tutorial im following tells me i have to add this to my wsgi.py file:</p>
  
  <p><a href="https://i.stack.imgur.com/4lAJg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4lAJg.png" alt="wsgi.py file"></a></p>
  
  <p>So the problem is that pycharm tells me: "Cannot find reference 'DjangoWhiteNoise' in 'django.py'"
  However i have installed whitenoise! and it is located in the "External libraries". I even went down into the whitenoise.django file, and there is nothing named DjangoWhiteNoise there...</p>
  
  <p>Thanks in advance. Havent found anythin about this concrete problem anywhere. </p>