feat: Move to passport for authentication (#1934)

- Added `accountProvisioner`
- Move authentication to use passport strategies
- Make authentication more pluggable
- Change language of services -> providers

closes #1120

server/test/helper.js

@@ -4,6 +4,8 @@ require("dotenv").config({ silent: true });
 // test environment variables
 process.env.DATABASE_URL = process.env.DATABASE_URL_TEST;
 process.env.NODE_ENV = "test";
+process.env.GOOGLE_CLIENT_ID = "123";
+process.env.SLACK_KEY = "123";
 
 // This is needed for the relative manual mock to be picked up
 jest.mock("../events");