R1:07423211e98e

Show edit transactions for AuthProviders

Summary: Ref T1536. When auth providers are edited, show the edit history.

Test Plan: {F46400}

Reviewers: btrahan

Reviewed By: btrahan

CC: aran, chad

Maniphest Tasks: T1536

Differential Revision: https://secure.phabricator.com/D6203