title: Reroute import pathes in django
body: <p>I want to use a django app (newapp) in my django project. To keep it simply updated, I would like to include it as git submodule, but this will lead to a folder structure like:</p>
  
  <pre><code>myproject
  |-app
  |-newapp-git
    |-newapp
      |-settings.py
      |-urls.py
      |-...
    |-README.md
  </code></pre>
  
  <p>That is because, newapp is unfortuntely not only the appfolder but also some files (like readme) and the subfolder newapp. I can add this in <code>INSTALLED_APPS</code> with <code>newapp-git.newapp</code>, but the app itself imports models etc. with <code>import newapp</code> which does not work, and I cannot change it because I dont want to modify the content in newapp to keep it updated simply.</p>
  
  <p>So, is there a chance to tell django, that imports from <code>newapp</code> should be rerouted to <code>newapp-git.newapp</code>?</p>