[ACA-1890][ACA-1798] metadata extension e2e (#711)

* [ACA-1890] make sure that the metadata component uses the extension settings

* [ACA-1798] remove unused imports

* [ACA-1798] test metadata extension

* format with Prettier

* [ACA-1798] changes after code review

src/app/extensions/extension.service.ts

@@ -221,10 +221,13 @@ export class AppExtensionService implements RuleContext {
     try {
       this.appConfig.config['content-metadata'] = { presets };
     } catch (error) {
-      console.error(error);
+      console.error(
+        error,
+        '- could not change content-metadata from app.config -'
+      );
     }
 
-    return presets;
+    return { presets };
   }
 
   filterDisabled(object) {