Allow delayed_job to use the locale defined for application

delayed_job requires a different configuration variable for locale than
the application.

See
https://stackoverflow.com/questions/8478597/rails-3-set-i18n-locale-is-not-working
for reference

config/application.rb

@@ -66,7 +66,8 @@ module Openfoodnetwork
     # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
     # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
     config.i18n.default_locale = ENV["LOCALE"]
-
+    I18n.locale = config.i18n.locale = config.i18n.default_locale
+    
     # Setting this to true causes a performance regression in Rails 3.2.17
     # When we're on a version with the fix below, we can set it to true
     # https://github.com/svenfuchs/i18n/issues/230