title: Icons missing in jQuery UI
body: <p>I'm using <a href="http://jqueryui.com/dialog/#modal-form">Modal Form</a> and <a href="http://jqueryui.com/sortable/#portlets">Widgets</a> from jQuery, but the icons does not appear. for eg the <code>Cross (X)</code> and <code>Plus-Minus (+-)</code> Icons.</p>
  
  <p>When I load the page I et these errors.</p>
  
  <pre><code>"NetworkError: 404 NOT FOUND - http://127.0.0.1:8000/static/css/images/ui-bg_flat_75_ffffff_40x100.png"
  ui-bg_...100.png
  
  "NetworkError: 404 NOT FOUND - http://127.0.0.1:8000/static/css/images/ui-icons_222222_256x240.png"
  ui-ico...240.png
  
  "NetworkError: 404 NOT FOUND - http://127.0.0.1:8000/static/css/images/ui-bg_highlight-soft_75_cccccc_1x100.png"
  ui-bg_...100.png
  </code></pre>
  
  <p>So, I downloaded the images, put it into the path specified, but then the <code>+- icons</code> appear twice at the extreme right and moreover only the column1 widgets are minimized. The <code>Close X</code> icon still not appears. Where I'm going wrong?</p>
  
  <p>I would also like to know how to add remove widgets functionality?</p>