I've developed a new package for translation handling. It works with Larvels default translation loader. You can export your translation files via artisan command to database. After translating all files you can simply reimport them from the database. The reimport creates all needed language folders and translation files for you. All you have to do is set the parameter "available_locales" in your config/app.php file. This way you can focus on one language in your dev environment. In production you export your default language, translate it and reimport it. All done with two artisan commands. See more under https://github.com/Brotzka/Laravel-Translation-Manager
// to export from resources/lang/xx to database
php artisan translations:toDatabase
// to import from database
php artisan translations:toFile