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/view/admin/auth.guard.ts

@@ -67,8 +67,8 @@ export class AuthGuard implements CanActivate {
             case '/admin/visitor':
                 if (this.userInfo && this.userInfo.role !== 'admin') {
                     observer.next(false);
-                    observer.complete();
                     if (this.visitCount === 1) this.router.navigateByUrl('/admin')
+                    observer.complete();
                     return;
                 }
         }