[MIE-710] - Add Nock to package.json; remove unnecessary config info from adapter config; enhance Activity controller functions to check for a testMode and testModeDebug environment variable that determines if a query is made to the Neo4j database or if the query should be mocked (with the ability to provide specific return data); update basic endpoint test to mock the Neo4j connection with Nock, set the testMode environment variables, lift/lower Sails server for the test, and clean up after itself.