R1:9a9bac0a02ba

Tighten up spacing on feed stories

Summary: Normalizes spacing a bit for better display on feed and on profiles/projects.

Test Plan: Test layout on project, feed, profiles. Tablet, Mobile, Desktop

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D15149