Setting core data based off the JSON feed taylor connected with.

CON-6
#time 2h
#comment JSON feed now populates the core data. On every pull we clear current data to make room for new data. Still need to clean up some of this code and drop in some comments, but I’ll leave some of that up to Taylor! Also need to set up the table view rows that we designed previously and use them instead of the test cells I created.