Add language settings for users, and translate titles to French

spec/models/user_spec.rb

@@ -1,3 +1,20 @@
+# == Schema Information
+#
+# Table name: users
+#
+#  id              :integer          not null, primary key
+#  admin           :boolean          default(FALSE), not null
+#  email_address   :string           not null
+#  lang            :string           default("en")
+#  password_digest :string           not null
+#  username        :string
+#  created_at      :datetime         not null
+#  updated_at      :datetime         not null
+#
+# Indexes
+#
+#  index_users_on_email_address  (email_address) UNIQUE
+#
 require 'rails_helper'
 
 RSpec.describe User, type: :model do