fixed core and shared module usage, lazy loading modules

src/app/+collection-page/collection-page-routing.module.ts

@@ -0,0 +1,13 @@
+import { NgModule } from '@angular/core';
+import { RouterModule } from '@angular/router';
+
+import { CollectionPageComponent } from './collection-page.component';
+
+@NgModule({
+  imports: [
+    RouterModule.forChild([
+      { path: ':id', component: CollectionPageComponent, pathMatch: 'full' }
+    ])
+  ]
+})
+export class CollectionPageRoutingModule { }