Update parse SDK to 2.0.0 (#4925)

* WIP: Integrate JS SDK v2

- Removes backbone style callbacks
- Use Promise instead of Parse.Promise

* Fixes ParseObject and ParseRelation

* Updates Parse.Query with promises

* Alls tests should pass

* Ensure a fresh user is used for each test

* Use REST implementation to avoid side effects for username/email duplicates

* Uses js sdk v2

spec/WinstonLoggerAdapter.spec.js

@@ -21,7 +21,7 @@ describe('info logs', () => {
         // Check the error log
         // Regression #2639
         winstonLoggerAdapter.query({
-          from: new Date(Date.now() - 500),
+          from: new Date(Date.now() - 200),
           size: 100,
           level: 'error'
         }, (results) => {