R1:2da9fcafbf7d

Update project manage page for two column

Summary: Fixes T10545. Converts layout to two column.

Test Plan: Review a few project manage pages, see new layout and flag ability.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T10545

Differential Revision: https://secure.phabricator.com/D15450