Proposal: Initial namespaces proposal

This is based on feedback and discussion that came out of #1017 

There was discussion that the term project may be problematic, so have removed it in favor of namespace.

I think this aligns nicely with the ACL model discussed thus far.

Feedback appreciated.

@erictune @lavalamp @smarterclayton 


Human readable - as in a pet vs cattle type of thing?  I make no statement either way.  I can update to just "Namespace" though, I actually prefer that after more thought.