Blacked and isorted the python files

Prettied and eslinted the typescript/html files

bookie/src/app/guest-book/guest-book-list-resolver.service.ts

@@ -1,18 +1,17 @@
 import { Injectable } from '@angular/core';
-import { ActivatedRouteSnapshot, Resolve, RouterStateSnapshot } from '@angular/router';
+import { Resolve } from '@angular/router';
 import { Observable } from 'rxjs/internal/Observable';
-import { GuestBookList } from './guest-book';
+
+import { GuestBookList } from './guest-book-list';
 import { GuestBookService } from './guest-book.service';
 
 @Injectable({
-  providedIn: 'root'
+  providedIn: 'root',
 })
 export class GuestBookListResolver implements Resolve<GuestBookList> {
+  constructor(private ser: GuestBookService) {}
 
-  constructor(private ser: GuestBookService) {
-  }
-
-  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<GuestBookList> {
+  resolve(): Observable<GuestBookList> {
     return this.ser.list(null);
   }
 }