Make Fund backers render a little more nicely
Summary: Ref T5835. Mostly UI smoothing. Also add a "Risks" field to initiatives.
Test Plan: {F214952}
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5835
Differential Revision: https://secure.phabricator.com/D10660