Clean up authentication list

Summary: Uses more standard boxes for display, and icons!

Test Plan:
Test with all enabled, all disabled, and a mix.

{F285945}

{F285946}

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11707