Added LocaleInterceptor to set Accept-Language header

src/app/core/core.module.ts

@@ -143,6 +143,7 @@ import { Version } from './shared/version.model';
 import { VersionHistory } from './shared/version-history.model';
 import { WorkflowActionDataService } from './data/workflow-action-data.service';
 import { WorkflowAction } from './tasks/models/workflow-action-object.model';
+import { LocaleInterceptor } from './locale/locale.interceptor';
 
 /**
  * When not in production, endpoint responses can be mocked for testing purposes
@@ -272,6 +273,12 @@ const PROVIDERS = [
     useClass: AuthInterceptor,
     multi: true
   },
+  // register LocaleInterceptor as HttpInterceptor
+  {
+    provide: HTTP_INTERCEPTORS,
+    useClass: LocaleInterceptor,
+    multi: true
+  },
   NotificationsService,
   FilteredDiscoveryPageResponseParsingService,
   { provide: NativeWindowService, useFactory: NativeWindowFactory }