Add project list to user profiles

Summary: Adds which Projects a user is a member of to their profile, with a link to more. Build fallback states for no badges or no projects.

Test Plan:
Review a user with projects, without projects, with badges, without badges.

{F1084127}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D15150