title: Symfony2 - override template bundle
body: <p>I want to override the default SonataAdmin Template.</p>
  
  <p>I create a standard_layout.html.twig in my Namespace/bundle/resources/views
  (same structur, same file name, same content)</p>
  
  <p>I copied all the content of the source template in my target template, i just edit some part of the target off course....and nothing</p>
  
  <p>thanks for your help
  Bye</p>