- remove d3.js and add chart.js

- add extra chartjs.module
- add extra diagram-view component for binding properties to chartjs chart

src/app/services/app-router.service.ts

@@ -0,0 +1,19 @@
+import { Injectable } from '@angular/core';
+import { Router } from '@angular/router';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class AppRouterService {
+
+  private router: Router
+
+  constructor(router: Router) { 
+    this.router = router;
+  }
+
+  public toDiagram() {
+    this.router.navigate(['diagram'])
+  }
+  
+}