User stories for review.

@hughhn @rcarino @josemontesdeoca @jaredzimmerman 

Proposed user stories for KIPP.  Please review.  Also, additional clarifying questions here:
https://docs.google.com/document/d/1hFFxBRcWRuEXc62et_yvSRwbhLXH4CCz7YCU4DHXhvI/edit

Are teachers inputting data as they walk around teaching a class? thinking about novel ways of finding student from roster, quickly inputting data and getting back to teaching will be crucial.