[ADF-3380] lazy loading fixes (#3609)

* lazy loading file viewer

* fix issue with CoreModule referencing

* fix issue with app config and lazy loading

* test fixes

* fix import

* lazy loading workaround for content module

* fix providers for lazy loading

* fix tests

* lazy loading for Process Services lib

* lazy loading for Insights, module cleanup

* fix issue with Translate module, optimise imports

* lazy-load blob viewer (demo shell)

* remove duplicate pdf init

* update to more stable pdfjs

* fix license header

* fix lint issues

* fix test import

* fix pdf version

lib/content-services/testing/content.testing.module.ts

@@ -36,7 +36,7 @@ import { ContentModule } from '../content.module';
         NoopAnimationsModule,
         RouterTestingModule,
         CoreModule.forRoot(),
-        ContentModule
+        ContentModule.forRoot()
     ],
     providers: [
         { provide: AlfrescoApiService, useClass: AlfrescoApiServiceMock },