buildbot/buildbot — pull request #1176 by asashnov (2014-07-10 06:21:26+00:00)
Title: Add 'Categories:' on waterfall page (like console already).

Items in 'Categories:' are click-able links like '/waterfall?category=...'
so they are convenient to filter your waterfall view.
Screenshot:
http://pix.academ.org/img/2014/07/10/40be2295c6e0de74ef17b8e138f5421c.png