title: target="_blank" in p:menuitem doesn't open new tab
body: <p>I am using  primefaces 5.1, liferay 6.2.0-ga2 and JSF2. I have a page with button. When I press right-click a context menu with one menuitem is displayed. That menuitem must open a new tab, but it doesn't.</p>
  <pre><code>&lt;p:commandButton id=&quot;viewUnassignedCase&quot;
      action=&quot;application-container&quot; styleClass=&quot;icon fa fa-eye&quot;&gt;
      &lt;f:setPropertyActionListener
          target=&quot;#{applicationManagementBean.application}&quot;
          value=&quot;#{unassignedCase}&quot; /&gt;
  
      &lt;f:setPropertyActionListener
          target=&quot;#{applicationManagementBean.activeIndexTab}&quot; value=&quot;0&quot; /&gt;
  &lt;/p:commandButton&gt;
  
  &lt;p:contextMenu for=&quot;viewUnassignedCase&quot; id=&quot;tableMenu&quot; 
      widgetVar=&quot;tableMenu&quot;&gt;
      &lt;p:menuitem value=&quot;#{caseList['caseManagement.case.newtab']}&quot; 
          target=&quot;_blank&quot;
          action=&quot;#{applicationManagementBean.openNewTabDetail(unassignedCase)}&quot;&gt;
      &lt;/p:menuitem&gt;
  &lt;/p:contextMenu&gt;
  </code></pre>
  <p>and the bean</p>
  <pre><code>public String openNewTabDetail(final FlexibleDomain application)
  {
  setApplication(application);
  return &quot;application-container&quot;;
  }
  </code></pre>
  <p>How can I fix it?</p>