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/product-group/product-group-detail/product-group-detail.component.ts

@@ -1,7 +1,7 @@
 import {AfterViewInit, Component, ElementRef, OnInit, ViewChild} from '@angular/core';
 
 import {ProductGroupService} from '../product-group.service';
-import {ProductGroup} from '../product-group';
+import {ProductGroup} from '../../core/product-group';
 import {ActivatedRoute, Router} from '@angular/router';
 import {ToasterService} from '../../core/toaster.service';
 import {FormBuilder, FormGroup} from '@angular/forms';
@@ -57,7 +57,7 @@ export class ProductGroupDetailComponent implements OnInit, AfterViewInit {
       .subscribe(
         (result) => {
           this.toaster.show('Success', '');
-          this.router.navigateByUrl('/ProductGroups');
+          this.router.navigateByUrl('/product-groups');
         },
         (error) => {
           this.toaster.show('Danger', error.error);