Setting the locale in capybara with selenium-webdriver

env.rb

  Capybara.register_driver :selenium_de do |app|
    require 'selenium/webdriver'
    profile = Selenium::WebDriver::Firefox::Profile.new
    profile['intl.accept_languages'] = "de"

    Capybara::Selenium::Driver.new(app, :profile => profile)
  end
  Capybara.javascript_driver = :selenium_de