Adds jobs endpoint protected by masterKey (#2560)

* Adds jobs endpoint protected by masterKey

* Adds connection timeout for 15 minutes in jobs

* Refactors pushStatusHandler into StatusHandler

* Adds reporting of _JobStatus

* Only accept strings as messages

* Adds test for masterKey basic auth

* Adds CloudCodeRouter for cloud_code endpoint of job status, enable Jobs feature on dashboard

* xit racing test

src/Routers/FeaturesRouter.js

@@ -18,6 +18,9 @@ export class FeaturesRouter extends PromiseRouter {
           update: false,
           delete: false,
         },
+        cloudCode: {
+          jobs: true,
+        },
         logs: {
           level: true,
           size: true,