Update services

This PR adds fields to the Services table to match [v0.2 of the HSDS](https://docs.google.com/a/codeforamerica.org/document/d/1RH89UY7FDndivWNmtQkql4tdRTwYnCZluyu8itp5nTw/edit?pli=1). All of the fields from the spec have been added except for `sms` and `language_line` because it seems like it makes more sense to capture that information in the Phones table.