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/user/user-list-resolver.service.ts

@@ -1,6 +1,6 @@
 import {Injectable} from '@angular/core';
 import {ActivatedRouteSnapshot, Resolve, Router, RouterStateSnapshot} from '@angular/router';
-import {User} from './user';
+import {User} from '../core/user';
 import {Observable} from 'rxjs/internal/Observable';
 import {UserService} from './user.service';