title: Ext JS 6 - Charts are not found despite including ext-all.js
body: <p>Despite that I included <code>ext-all.js</code> file in my index page; getting error like below when I try <a href="http://examples-origin.sencha.com/extjs/6.0.0/examples/kitchensink/?charts=true#gauge-basic" rel="nofollow">this online Guage chart example provided by Sencha</a></p>
  
  <pre><code>http://myapp.com/widget/polar.js?_dc=1436970370848 404 (Not Found)
  Uncaught Error: [Ext.create] Unrecognized class name / alias: widget.polar
  </code></pre>