title: Python Import Error when importing tests from django-social-auth
body: <p>I'm trying to subclass some classes from the django-social-auth package to create custom test.</p>
  
  <p>The source <a href="https://github.com/omab/django-social-auth" rel="nofollow">https://github.com/omab/django-social-auth</a></p>
  
  <p>The problem is that i cannot import the "tests" part:</p>
  
  <pre><code>C:\Users\Alle&gt;python
  Python 2.6.6 (r266:84297, Aug 24 2010, 18:46:32) [MSC v.1500 32 bit (Intel)] on win32
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; import social_auth.tests.base
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named tests.base
  &gt;&gt;&gt; import social_auth.tests
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named tests
  &gt;&gt;&gt; import social_auth.db
  &gt;&gt;&gt; social_auth.db
  &lt;module 'social_auth.db' from 'C:\Python26\lib\site-packages\social_auth\db\__init__.pyc'&gt;
  &gt;&gt;&gt;
  </code></pre>
  
  <p>why i get this behaviour?</p>