title: f:convertNumber remove comma as thousand separator
body: <p>I want to round value with four decimal places to one decimal place. That is why I use <code>f:convertNumber</code>:</p>
  
  <pre><code>&lt;h:outputText value="${current.dayAverage.pressureRelative}" &gt;      
      &lt;f:convertNumber maxFractionDigits="1"/&gt;
  &lt;/h:outputText&gt;
  </code></pre>
  
  <p>The rounding is done right, but the <code>f:convertNumber</code> adds thousand comma separator. I want to remove this separator but I don't know how. I am using Apache MyFaces 2.1 implementation. In the <a href="http://myfaces.apache.org/core21/myfaces-impl/tagdoc/f_convertNumber.html" rel="nofollow">API for f:convertNumber</a> it does not have any attribute to specify thousand separator. I suppose that this could be defined in locale attribute?</p>