Straighten out some crumbs and links for workboards
Summary: Ref T1344. Minor tweaks for crumb/link stuff -- @mikn has been doing some work here recently and I want to unblock him.
Test Plan: Viewed board; viewed column edit screen.
Reviewers: chad, btrahan
Reviewed By: chad
CC: mikn, aran
Maniphest Tasks: T1344
Differential Revision: https://secure.phabricator.com/D7937