title: p:dialog with resizable="true" doesn't resize when its p:inputTextarea resizes
body: <p>I have a <code>p:dialog</code> with <code>resizable="true"</code> and it contains a <code>p:inputTextarea</code>, which is also resizable:</p>
  
  <pre><code>&lt;p:dialog header="Comment" widgetVar="commentDialog" modal="true" resizable="true" height="100"&gt;
      &lt;h:form&gt;
          &lt;h:outputLabel for="comment" value="Comment:"/&gt;
  
          &lt;p:inputTextarea id="comment" title="Comment" 
                  rows="6" cols="33"
                  value="#{managedBean.comment}"
                  required="true" styleClass="plainInput"/&gt;
          &lt;h:commandButton value="Submit"/&gt;
      &lt;/h:form&gt;
  &lt;/p:dialog&gt;   
  </code></pre>
  
  <p>However, as I enter more text into the text area than its initial capacity, the text area does resize but the dialog does not.</p>
  
  <p>How do I make the dialog resize together with the text area?</p>