[ADF-2569] fix reload app.config.json (#3124)

* fix reload app.config.json

* improve style mobile
fix test

* test karma setup update

* fix core providers test

* remove unused providers

* use mock api in service test

* skip test in the wrong place

* remove comma

* remove fdescribe

lib/core/app-config/app-config.module.ts

@@ -16,24 +16,15 @@
  */
 
 import { HttpClientModule } from '@angular/common/http';
-import { APP_INITIALIZER, NgModule } from '@angular/core';
+import { NgModule } from '@angular/core';
 import { AppConfigService } from './app-config.service';
-import { startupServiceFactory } from './startup-service-factory';
 
 @NgModule({
     imports: [
         HttpClientModule
     ],
     providers: [
-        AppConfigService,
-        {
-            provide: APP_INITIALIZER,
-            useFactory: startupServiceFactory,
-            deps: [
-                AppConfigService
-            ],
-            multi: true
-        }
+        AppConfigService
     ]
 })
 export class AppConfigModule {