Feature: Lazy loading

Lazy loaded everything
TODO: The cash flow module when clicking on sub-links, it reloads the whole page, it needs to be diagnosed and fixed, this problem also exists in the other modules
TODO: Rename folders and modules such as account to accounts to match the url

overlord/src/app/auth/auth-guard.service.ts

@@ -4,7 +4,7 @@ import {AuthService} from './auth.service';
 import {Observable} from 'rxjs/internal/Observable';
 import {map} from 'rxjs/operators';
 import {ToasterService} from '../core/toaster.service';
-import {User} from '../user/user';
+import {User} from '../core/user';
 
 @Injectable({
   providedIn: 'root'