[sugar] Content types

[Christopher Blizzard]

Ivan Krsti? wrote:
> This has been my plan. Activities get a limited, secure file area of
> their own to do with as they please, and access to the document store
> for actual documents. Most activities will use the file area for things
> like config files, but some might elect to use it to keep their own
> sqlite database or some such.

Yeah, this would be great stuff.  It's part of the security story, too. 
  Enforce it with some selinux contexts and you've got yourself at least 
part of the sandboxing story.

--Chris