add japanese translation.
add japanese translation.

nicolasricci/SonataMediaBundle,OskarStark/SonataMediaBundle,sonata-project/SonataMediaBundle,jerome-fix/SonataMediaBundle,hug963/SonataMediaBundle,hug963/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,OskarStark/SonataMediaBundle,vyshkant/SonataMediaBundle,jerome-fix/SonataMediaBundle,bgaleotti/SonataMediaBundle,rmzamora/SonataMediaBundle,jerome-fix/SonataMediaBundle,bgaleotti/SonataMediaBundle,nicolasricci/SonataMediaBundle,hug963/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,bgaleotti/SonataMediaBundle,rmzamora/SonataMediaBundle,bgaleotti/SonataMediaBundle,jerome-fix/SonataMediaBundle,nicolasricci/SonataMediaBundle,rmzamora/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,vyshkant/SonataMediaBundle,vyshkant/SonataMediaBundle,vyshkant/SonataMediaBundle,OskarStark/SonataMediaBundle,nicolasricci/SonataMediaBundle,vyshkant/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,nicolasricci/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,hug963/SonataMediaBundle,hug963/SonataMediaBundle,OskarStark/SonataMediaBundle