New icons for Maniphest

Summary: Fixes 2x white icons, adds 'user' and 'project' icons.

Test Plan: tested new states in Maniphest

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D7176
Fix an issue with UUID query construction

Summary: This is SVN-only and I missed it in my test plan.

Test Plan: `arc diff` in SVN repository with no `.arcconfig`.

Auditors: btrahan