Miscellanous badge fixes

Summary: Ref T12270. Add transaction validation for name, alias, award, revoke. Change auto subscribe for authors. Fix some typos.

Test Plan: Add badge, award badge, revoke badge, edit badge.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T12270

Differential Revision: https://secure.phabricator.com/D17412