*rubs eyes, looks again* whoa, the documentation got _simpler_?
Fix documentation references to "phase".
Review Request #913 — Created Aug. 18, 2014 and submitted
Removes references to the old Goal (now TaskRegistrar) class, as it's no longer an important concept. All the reader needs to know about are Goals (formerly Phases) and Tasks. Also fixed some incorrect/out-of-date documentation around GroupTasks.