Language widget

I just installed grav with antimatter theme v 1.8. I would like to have a mono-language site (in french).

What should I do exactly for having the dates and the widget titles in french ? I attempted many combination, without any success.

From the admin interface (which is now in french), my configuration is the following :

  • my profile language : french

In theme config :

  • default lang for theme: fr

in system config :

  • language supported : fr
  • include default lang: yes
  • translation enabled : yes
  • translation fallback: yes
  • active language in session: no
  • define lang from browser: no
  • substitute lang PHP: no

Thanks !