Load more button on Posts page

src/startup.rs

@@ -135,6 +135,7 @@ pub fn app(
         .route("/unsubscribe", get(get_unsubscribe).post(post_unsubscribe))
         .route("/unsubscribe/confirm", get(unsubscribe_confirm))
         .route("/posts", get(list_posts))
+        .route("/posts/load_more", get(load_more))
         .route("/posts/{post_id}", get(see_post))
         .route("/favicon.ico", get(favicon))
         .nest("/admin", admin_routes)