Normalize SQL schema

I've taken a first stab at normalizing the database schema, extracting ```business```, ```business_license```, ```code```, and ```inspection_order``` tables. The intent is to allow easier data manipulation as well as integration of data from other sources, such as other cities/municipalities around the metro.

Please review, I'd like your feedback.

If this mirrors work you've already performed to power [mplshealth.com](http://mplshealth.com/) I will laugh out loud and go to bed.

A complete set of schema & data files are provided, as well as a transformation file, ```migrate.sql```, which was used to migrate from ```InspectionHistory-008-converted-iso8601-utf8-database.sql```.