Finish setting up db, screen-scraper, and models

The database and configuration services are now working.

The screen scraper CLI command is now working; runningn it populates the
database with appartment complexes it finds on the url specified in the
config.  Currently it deletes all previous quieries upon being run!

I filled in part of the appartment service with database queires.
Hard code links

Ideally there would be a reverse url router, to keep loose decoupling,
but any approach I could find was more trouble than it was worth.
Fix url bug
Add url service for future use