Hash fragment to manage the context for links in emails

src/app/profile/dashboard/orientation-details/orientation-details.component.ts

@@ -53,6 +53,12 @@ export class OrientationDetailsComponent implements OnInit {
       }
     });
 
+    // if coming from the email (with a URL like /details-orientation/[orientationID]#to)
+    const hash = this.router.parseUrl(this.router.url).fragment;
+    if (hash === 'to') {
+      this.from = 'todoOrientations';
+    }
+
     this.profileService.getProfile().then((profile) => {
       this.userProfile = new User(profile);
     });