JavaScript conflates dates and datetimes in an unfortunate manner. This
commit customizes our JSON.Stringify call so that when we receive
date-level precision from our source document, we only output date-level
precision in our JSON. This also makes our test suite no longer dependent
on running in Pacific Standard Time. It is a breaking change for our
JSON API.

There are also a couple miscellaneous fixes (a typo in the procedures
code and in the Gruntfile)
Merge pull request #99 from elationemr/json_dates

Output date-only string in BB JSON