R1:3a01d6dae516

Fix project editing issue with moving wikis

Summary: Fixes T4409. I didn't get this quite right when I updated it to ApplicationTransactions.

Test Plan: Renamed a project, saw wiki move.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4409

Differential Revision: https://secure.phabricator.com/D8198