Remove PhabricatorProject->loadProfile
Summary: Ref T603. Do modern, sensible queries here.
Test Plan: Viewed project profile, list, member edit, profile edit, used typeahead, changed project image.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T603
Differential Revision: https://secure.phabricator.com/D7252