title: special characters in url filename cause problems
body: <p>I have the following www.mywebsite.com/upload/server/php/files/foto/test/Aston_Martin_DBS_V12_coupé_(rear)_b-w.jpg</p>
  
  <p>This file is uploaded trough a script. The file exists on the server.
  However, because the special character in the url (é), I am experiencing some problems.</p>
  
  <p>The filename on the server is <code>Aston_Martin_DBS_V12_coup%C3%A9_(rear)_b-w.jpg</code>, which is correct. However somehow my browser (Chrome) requests this page as ISO-8859-1 instead of UTF-8. </p>
  
  <p>Therefore, I get a 404.
  <img src="https://i.stack.imgur.com/xgiV0.png" alt="enter image description here"></p>
  
  <p>I am using jQuery file upload plugin.</p>