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-routing.module.ts

@@ -9,7 +9,7 @@ import {AuthGuard} from '../auth/auth-guard.service';
 
 const productGroupRoutes: Routes = [
   {
-    path: 'ProductGroups',
+    path: '',
     component: ProductGroupListComponent,
     canActivate: [AuthGuard],
     data: {
@@ -20,7 +20,7 @@ const productGroupRoutes: Routes = [
     }
   },
   {
-    path: 'ProductGroup',
+    path: 'new',
     component: ProductGroupDetailComponent,
     canActivate: [AuthGuard],
     data: {
@@ -31,7 +31,7 @@ const productGroupRoutes: Routes = [
     }
   },
   {
-    path: 'ProductGroup/:id',
+    path: ':id',
     component: ProductGroupDetailComponent,
     canActivate: [AuthGuard],
     data: {