title: jquery.fileupload.js:87 Uncaught TypeError: $.widget is not a function on jQuery-file-upload
body: <p>I tried to use <a href="https://blueimp.github.io/jQuery-File-Upload/basic.html" rel="noreferrer">basic</a> example (<a href="https://github.com/blueimp/jQuery-File-Upload/blob/master/basic.html" rel="noreferrer">source</a>) for <a href="https://github.com/blueimp/jQuery-File-Upload/wiki" rel="noreferrer">jquery-file-upload</a>, files that I've included in my html are:</p>
  
  <pre><code>jquery.js
  bootstrap.css
  bootstrap.js
  
  jquery.fileupload.css
  jquery.iframe-transport.js
  jquery.fileupload.js
  </code></pre>
  
  <p>Is there anything else that I should include to properly use <code>jquery-file-upload</code>?</p>
  
  <p>My app doesn't need to use <code>jquery-ui</code>.
  If <code>jquery-ui</code> is really a dependency to <code>jquery-file-upload</code>, is there any workaround to use it without <code>jquery-ui</code>?</p>