Feature: Add a collapse/show advanced view feature on the Dashboard

fixes #134

frontend/src/app/services/storage.service.ts

@@ -0,0 +1,22 @@
+import { Injectable } from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class StorageService {
+  getValue(key: string): string {
+    try {
+      return localStorage.getItem(key);
+    } catch (e) {
+      console.log(e);
+    }
+  }
+
+  setValue(key: string, value: any): void {
+    try {
+      localStorage.setItem(key, value);
+    } catch (e) {
+      console.log(e);
+    }
+  }
+}