On workboards, link ancestor project breadcrumbs to their workboards
Ref T13269. Currently, if you're on a milestone workboard like this:
Projects > Parent > Milestone > Workboard
The "Parent" link goes to the parent profile. More often, I want it to go to the parent workboard. Try doing that? This is kind of one-off but I suspect it's a better rule.
Also, consolidate one billion manual constructions of "/board/" URIs.
Test Plan: Viewed a milestone workboard, clicked the parent link, ended up on the parent workboard.
Reviewed By: amckinley
Maniphest Tasks: T13269
Differential Revision: https://secure.phabricator.com/D20331