R1:a49fec39be84

Move lint/unit test warning code forward to Transactions

Summary: Ref T2222. Makes the "lint/unit errors" warnings work again.

Test Plan: Viewed some revisions with and without these warnings.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2222

Differential Revision: https://secure.phabricator.com/D8475