Get some level of meaningful status information into Harbormaster buildable list
Summary: Ref T1049. Nothing fancy, but shows red for fail/error and green for pass. See discussion in D7502.
Test Plan: {F78839}
Reviewers: hach-que, btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1049
Differential Revision: https://secure.phabricator.com/D7512