edx/edx-tim — pull request #33 by jrbl (2014-02-11 06:27:14+00:00)
Title: TIM-126: Peer criteria support explanations

* Rubric criteria options now support an optional
child, which is used as explanatory text for that particular
criterion option, e.g.:
5 - Very Well (indicates intelligent use of persuasive
argument to, etc etc.)
* Sample explanations added to the Poverty sample rubric to
show them in use.
* parse_xml refactored to make it easier to see the forest for
the trees.
* max available points calculated at rubric ingestion time now