R1:74f6c75ae743

Tighten pinboard view.

Summary: Removes a little slop from the top and right of the pinboard view.

Test Plan: Tested Macro and Pholio layouts. Things wrapped less.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5197