添加密码修改功能，完善抽屉部分信息的展示，修改头像显示异常的错误

src/app/components/admin-header/admin-header.component.ts

@@ -14,7 +14,7 @@ export class AdminHeaderComponent implements OnInit {
 
     user: User
     @Output() infoClicked = new EventEmitter<void>()
-
+    noAvatarUrl = 'https://cdn.celess.cn/'
     logout = () => this.userService.logout();
     infoClickedEvent = () => this.infoClicked.emit();