Fixes #31 - Add settings config from upstream

Incorporates custom settings config from upstream (the architecture, but not the content from https://github.com/codeforamerica/ohana-web-search/pull/444)
CalFresh is on https://github.com/smcgov/SMC-Connect/pull/48/files#diff-646ad6b10917e4385cbcc8c8524e24a2R193, market match is on https://github.com/smcgov/SMC-Connect/pull/48/files#diff-646ad6b10917e4385cbcc8c8524e24a2R205, and SFMNP is on https://github.com/smcgov/SMC-Connect/pull/48/files#diff-646ad6b10917e4385cbcc8c8524e24a2R178. Am I missing something here?