Store files on your filesystem
By default, Sakai will store the file content in the database as BLOBs by default,
It is highly recommended that you store the content on your filesystem instead.
Define the file system root for content hosting's external stored files.
see the readme file (2.2.7 File Based Content Hosting) for more details
bodyPath@org.sakaiproject.content.api.ContentHostingService=/someplace/