R1:94389fcd9f58

Allow projects to be filtered by icon and color

Summary: Ref T5819. Implements basic icon and color filtering for projects.

Test Plan: {F189350}

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Maniphest Tasks: T5819

Differential Revision: https://secure.phabricator.com/D10230