title: FineUploader allowedExtensions use an array?
body: <p>I'm using FineUploader v3.8, and have successfully gotten it up and running.  At this point, I'm listing the available file types to the user in HTML, and there's a reference to these in the configuration.  I wanted to have only one place where the extensions are listed so there's no duplication, and it can be easily changed.  </p>
  
  <p>I tried something like this:</p>
  
  <p><code>var allowedExtensions = new Array('jpg', 'gif', 'png');</code></p>
  
  <p><code>var allowedExtensions = "'jpg', 'gif', 'png'";</code></p>
  
  <p>And then within 'validation:' I used something like this:</p>
  
  <p><code>allowedExtensions: [allowedExtensions],</code></p>
  
  <p>This doesn't work, and I get an invalid file type messagebox for any/all file types.<br>
  Is there a way I could easily utilize the array variable in the javascript of the control configuration?  Thanks!</p>