title: Django: django-admin-tools: adding custom js
body: <p>I have installed django-admin-tools and created a dashboard.py in my project 
  folder.</p>
  
  <p>Inside this file I have specified a media class: </p>
  
  <pre><code>#myproject/dashboard.py 
  class Media: 
          css = ('',) 
          js = ('http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/ 
  jquery.min.js',) 
  </code></pre>
  
  <p>In my settings I have:</p>
  
  <pre><code>#settings.py
  # admin_tools 
  ADMIN_TOOLS_INDEX_DASHBOARD = 
  'myproject.dashboard.CustomIndexDashboard' 
  ADMIN_TOOLS_APP_INDEX_DASHBOARD = 
  'myproject.dashboard.CustomAppIndexDashboard' 
  </code></pre>
  
  <p>And my URLs are configured as follows:</p>
  
  <pre><code>#urls.py
  ... 
  urlpatterns+= patterns('', 
          url(r'^admin_tools/', include('admin_tools.urls')), 
          url(r'^admin/', admin.site.urls), 
  
          url(r'', include('feincms.urls')), 
  
  ) 
  </code></pre>
  
  <p>Anyone see any glaring mistakes? I don't see the jquery file being 
  downloaded in firebug. I assume jquery is also part of admin_tools, 
  but this error message seems to indicate it is not? </p>
  
  <pre><code>Uncaught TypeError: Property '$' of object [object DOMWindow] is not a 
  function 
  </code></pre>
  
  <p>Any help is appreciated. </p>