Summary: Ref T3663. There's no data recorded in this table yet, but add the UI and controller for it. Edits and such will eventually go here.
Test Plan: Clicked "View History" on a project, got an empty but non-broken page.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T3663
Differential Revision: https://secure.phabricator.com/D6785
