title: Sonata Favico won't change
body: <p>I recently began a new Symfony 2.7 project and i wanted to add a back office to it so i choosed sonata admin to save some time.</p>
  
  <p>The whole thing is functionnal but i stumble acrosse a detail that drives me mad.</p>
  
  <p>The favico won't change, even worst even after i have deleted it from the project folders it stay the same without the file.</p>
  
  <p>I juste don't understand why the old favico stay when it should use the new one i have put in my web folder..</p>
  
  <p>Does anyone know how to change the sonata admin Favico ?</p>
  
  <p>thank you for reading.</p>