Summary: I introduced this helper at some point, clean up all the code duplication around content sources.
Test Plan: Grepped; hit edit interfaces for most/all of these.
Reviewers: btrahan, chad, edward
Reviewed By: chad
CC: aran
Differential Revision: https://secure.phabricator.com/D6030
Summary: Not for full review. This makes crumbs appear consistently in mobile. It helps give a quick link to the apps home, the page title currently on, and action icons for the object. It will take additional clean-up to make this consistent across apps. Passing for early review from a UEX perspective. I actually really like it and think onces it's everywhere, helps mobile feel complete.
Test Plan: Testing in iOS and Simulator.
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T2796
Differential Revision: https://secure.phabricator.com/D5446