external_services db table and graphql api
Created by: nicksnyder
This PR creates the external_services table and graphql API for managing that table.
part of https://github.com/sourcegraph/sourcegraph/issues/914#issuecomment-440067022
Created by: nicksnyder
This PR creates the external_services table and graphql API for managing that table.
part of https://github.com/sourcegraph/sourcegraph/issues/914#issuecomment-440067022