title: Twig: Translate DateFormat-> Day
body: <p>I have this in my twig-template</p>
  
  <pre><code>{{ returnDate|date("l, d.m.Y") }}
  </code></pre>
  
  <p>The ouput is <code>Friday, 08.05.2015</code>.
  Its it possible to translate the dayname -> <code>"l"</code>?
  Something like this <code>{{ returnDate|date("l, d.m.Y")|trans }}</code></p>