Add language settings for users, and translate titles to French

config/locales/fr.yml

@@ -0,0 +1,37 @@
+fr:
+  completions:
+    edit:
+      title: "Modifier la complétion"
+    new:
+      title: "Nouvelle complétion"
+  contests:
+    edit:
+      title: "Paramètres du concours"
+    index:
+      title: "Bienvenue %{username}!"
+    new:
+      title: "Nouveau concours"
+    scoreboard:
+      title: "%{name}"
+    show:
+      title: "%{name}"
+  contestants:
+    edit:
+      title: "Participant"
+    new:
+      title: "Nouveau.elle participant.e"
+  puzzles:
+    edit:
+      title: "Modifier le puzzle"
+    new:
+      title: "Nouveau puzzle"
+  sessions:
+    new:
+      title: "Se connecter à l'app Public Scoreboard"
+  users:
+    edit:
+      title: "Mes paramètres"
+    index:
+      title: "Tous.tes les utilisateur.ices"
+    new:
+      title: "Nouveau.elle utilisateur.ice"