title: SonataAdmin, add menu on left
body: <p>I'm working on Symfony2 and SonataAdminBundle.</p>
  
  <p>I need to know how to add a menu in the left part of my dashboard ? Like in the screen : </p>
  
  <p><img src="https://i.stack.imgur.com/MlQO2.png" alt="enter image description here"></p>
  
  <p>I need to have the Dashboard block in the left part on the page (in dark-grey on my screen).. how can i do that ?</p>
  
  <p>you can see on the demo of SonataAdmin <a href="http://demo.sonata-project.org/admin/dashboard" rel="noreferrer">http://demo.sonata-project.org/admin/dashboard</a>, login admin, apssword admin</p>