Sf3 compatbility fix for sync-thumbnails command (#1317)
Sf3 compatbility fix for sync-thumbnails command (#1317)

* S3 compatibility with dialog/question helper

* Style change

OskarStark/SonataMediaBundle,jerome-fix/SonataMediaBundle,sonata-project/SonataMediaBundle,OskarStark/SonataMediaBundle,jerome-fix/SonataMediaBundle,hug963/SonataMediaBundle,OskarStark/SonataMediaBundle,hug963/SonataMediaBundle,jerome-fix/SonataMediaBundle,jerome-fix/SonataMediaBundle,hug963/SonataMediaBundle,OskarStark/SonataMediaBundle,hug963/SonataMediaBundle,hug963/SonataMediaBundle