Config - make "No auth providers configured" check use proper hyperlinking technology

Summary: Fixes T8346. Also gets rid of the air quotes on Auth and uses the "Appname Application" style we use elsewhere.

Test Plan: slapped an "|| true" in the checking logic and verified the link was rendered in a usable fashion just below the error message.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T8346

Differential Revision: https://secure.phabricator.com/D13315