add application/xml in valid xml mime type
add application/xml in valid xml mime type

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