title: Symfony Sonata admin languages not work
body: <p>I install Sonata admin Bundle, everything work but I don't have any language - buttons and text in admin is like before translated example : </p>
  
  <p>label.select_context  , btn_filter  (not filter but btn_filter) </p>
  
  <p>and other - where I can setup language to sonata admin ? </p>