Add all possible data to example location

[anselmbradford]

For design purposes / CSS optimization it's important to have a single location that has all information filled out. The Example Location used in the test data should have Categories added to its services, and any other data that is missing.

Update instructions here:
https://github.com/codeforamerica/ohana-api/blob/master/CONTRIBUTING.md#updating-the-sample-data

[monfresh]

Categories have been added to the example service and both test and demo sites have been updated.