Basic Storing of Raw Inmate Data 

This functionality is grafted on to the functionality of the Inmates class. It just stores the added or updated inmate entries. To run it requires two directories to exist and a feature switch to be activated, instructions on them found [here](https://github.com/sc3/cookcountyjail/wiki/Scraper-Configuration-Options).

For the snapshot data to be accessible then #431 needs to be implemented and released.