title: display seconds in DateTimeItem (SmartGWT)
body: <p>when reading <a href="https://stackoverflow.com/questions/10177171/smartgwt-datetimeitem-accept-12-hour-format">SmartGWT DateTimeItem: accept 12 hour format</a> I found that using <code>TimeDisplayFormat</code> offers the options to display the seconds as, e.g. <code>dateTimeItem.setTimeFormatter(TimeDisplayFormat.TOPADDED24HOURTIME);</code> well, but there was no change in the displaying of the date. </p>
  
  <p>As the code states that <code>TimeDisplayFormat</code> is deprecated, and one should use the <code>DateDisplayFormatter</code> instead, I tried <code>dateTimeItem.setDateFormatter(DateDisplayFormat.TOSERIALIZEABLEDATE);</code>, but still no change.</p>
  
  <p>The value gets set via <code>dateTimeItem.setValue(myDate);</code></p>
  
  <p>Any idea what (else) I have to set to the <code>DateTimeItem</code> in order to get the seconds displayed as well?</p>
  
  <p>I'm using SmartGWT 3.1</p>
  
  <p>PS: I tried <code>dateTimeItem.setDisplayFormat(DateDisplayFormat.TOSERIALIZEABLEDATE);</code> as well, but still no change</p>