I have deployed an instance by default before S3 support was added and I would like to migrate the media to S3. I have no idea how this implementation is being performed and: * if I could just create a S3 bucket and upload current media folder there following certain directory structure to get it done * if an automatic way will be performed in a future * if you use S3 as a real object storage system and save in micro blocks which prevents media from being accessed directly while hosted there.