Push scalability (#3080)

* Update status through increment
* adds support for incrementing nested keys
* fix issue when having spaces in keys for ordering
* Refactors PushController to use worker
* Adds tests for custom push queue config
* Makes PushController adapter independant
* Better logging of _PushStatus in VERBOSE

src/Config.js

@@ -58,6 +58,9 @@ export class Config {
     this.hooksController = cacheInfo.hooksController;
     this.filesController = cacheInfo.filesController;
     this.pushController = cacheInfo.pushController;
+    this.pushControllerQueue = cacheInfo.pushControllerQueue;
+    this.pushWorker = cacheInfo.pushWorker;
+    this.hasPushSupport = cacheInfo.hasPushSupport;
     this.loggerController = cacheInfo.loggerController;
     this.userController = cacheInfo.userController;
     this.authDataManager = cacheInfo.authDataManager;