title: FeedbackPanel stylize/change message
body: <p>How to stylize my Feedback message? Now it's like a normal html list element.</p>
  
  <p>How to change my Feedback messages for validators like email validator?</p>
  
  <p>I know that I can change the .setRequired() message with a property file and the following code:</p>
  
  <pre><code>  Required=Provide a ${label} or else...
  
    form.userId.Required=You have to provide a name
  </code></pre>