remove all blip patient data munging code and replace with nurseshark

WIP, don't merge.

@cheddar @nicolashery Do either or both of you want to take a quick peek and confirm that I got all the old stuff out? I'm pretty sure I did.
Given 

1. notes are passed along to nurseshark
2. nurseshark is intended to be the conversion layer for data from the API into what tideline expects

It seems like the correct place for this conversion logic should be inside of nurseshark.  At least, I thought that part of the motivation for introducing nurseshark was to consolidate the conversion process into one place and adding this here definitely goes against consolidation...