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/raw-material-cost/raw-material-cost.component.ts

@@ -7,7 +7,7 @@ import {Observable} from 'rxjs';
 import * as moment from 'moment';
 import {RawMaterialCostDataSource} from './raw-material-cost-datasource';
 import {RawMaterialCost} from './raw-material-cost';
-import {Product} from '../product/product';
+import {Product} from '../core/product';
 import {ToCsvService} from '../shared/to-csv.service';
 
 @Component({
@@ -53,7 +53,7 @@ export class RawMaterialCostComponent implements OnInit {
 
   show() {
     const model = this.prepareSubmit();
-    this.router.navigate(['RawMaterialCost'], {
+    this.router.navigate(['raw-material-cost'], {
       queryParams: {
         startDate: model.startDate,
         finishDate: model.finishDate