R1:91d0d92a9fd7

Add a bunch of policy tests for projects

Summary: Improve test coverage for policy rules in project edits.

Test Plan: Ran uint tests.

Reviewers: btrahan, vrana

Reviewed By: btrahan

CC: aran, alanh

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D3294