Kore::Comm <-> Kore::Data auth demo

[eriknelson]

Blockers: #7, and #4

Once we've got a non-authenticated example of operating against the Data API, let's bring in the authenticated learnings from #4 and demonstrate privileged user operations. Example:

!start_show, !stop_show for only users that belong to the admin group. All service authenticated users allowed to suggest.