Add loading message to manage page

public/scripts/manage.js

@@ -3,6 +3,7 @@ import * as Data from "./data.js";
 const categoryDropdown = document.getElementById('category-dropdown');
 const itemsListTable = document.getElementById('items-list');
 const addNewButton = document.getElementById('add-new-button');
+const loadingSpan = document.getElementById('loading-message');
 
 
 function getGenderLetter(genderName) {
@@ -362,6 +363,8 @@ CATEGORIES.push(new Category(
 
 
 async function listItems(category) {
+    loadingSpan.textContent = "Loading...";
+
     itemsListTable.innerHTML = "";
 
     const itemsList = await category.getItems();
@@ -389,6 +392,8 @@ async function listItems(category) {
 
         itemsListTable.appendChild(row);
     });
+
+    loadingSpan.textContent = '';
 }
 if(window.location.hash) {
     let correctIndex;

views/manage.pug

@@ -18,6 +18,7 @@ block content
                     option(value="accounts") Accounts
     div 
         h2#table-header
+        span#loading-message Loading...
         table#items-list
         button#add-new-button Add new...