title: translating time_ago_in_words to french for I18n in rails
body: <p>How can I translate <code>time_ago_in_words</code>?</p>
  
  <p>I am having a missing translation text for the fr locale:</p>
  
  <blockquote>
    <p>Translation missing: fr.datetime.distance_in_words.x_days   ago|</p>
  </blockquote>