title: The theme constant statusBarScrollsUpBool doesn't work - how to make it work?
body: <p>IOS apps with scrollable areas usually scroll them up when the title bar is tapped.</p>
  
  <p>There is a related theme constant <code>statusBarScrollsUpBool</code> but either way this does not work or only in the unlikely case one manages to tap the gap between the top of the screen and the title bar.</p>
  
  <p>Now I am asking myself how to make it work.</p>
  
  <p><code>Form.getToolbar()</code> - then what? Obviously I cannot make it a lead component and there is no button.</p>
  
  <p>I'd like to intercept a tap on the title bar the right way to be able to do the scrolling as it is provided by <code>Form.createStatusBar()</code>.</p>
  
  <hr>
  
  <p>I tried that - which is almost good - but the title shrinks when tapped:</p>
  
  <pre><code>    Toolbar toolbar = getToolbar();
      Button buttonTitle = new Button(Command.create(getTitle(), null, actionListenerUp));
      buttonTitle.setUIID(toolbar.getTitleComponent().getUIID());
      toolbar.setTitleComponent(buttonTitle);
  </code></pre>