title: x-editable (twitter bootstrap): how to change the empty value?
body: <p>I'm using the x-editable plug-in to have in-place edits and it works well.</p>
  
  <p>The following jsfiddle shows an example from their documentation:
  <a href="http://jsfiddle.net/ibrahima_yock/CFNXM/27/" rel="noreferrer">http://jsfiddle.net/ibrahima_yock/CFNXM/27/</a></p>
  
  <pre><code>&lt;div&gt;
       &lt;span&gt;Status:&lt;/span&gt;
       &lt;a href="#" id="status"&gt;&lt;/a&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>.</p>
  
  <pre><code>//make status editable
  $('#status').editable({
      type: 'select',
      title: 'Select status',
      placement: 'right',
      source: [
          {value: 1, text: 'status 1'},
          {value: 2, text: 'status 2'},
          {value: 3, text: 'status 3'}
      ]
   });
  </code></pre>
  
  <p>As you can see in the jsFiddle, in the html pane the status is "empty" (written in red). We'd like to translate that word into another language. How can we specify it?</p>