General refactor

app/views/add.ejs

@@ -16,6 +16,7 @@
     <script src="<%= js_path %>" defer></script>
     <script defer>
         var column_options = '<%- column_options %>';
+        var app_url = '<%= app_url %>';
     </script>
 </head>
 
@@ -35,12 +36,12 @@
             <%- table_data %>
         </table>
         <div style="display: flex; flex-direction: row; justify-content: space-between;">
-            <a href="/app"><span>&#129152; </span>Return</a>
+            <a href="<%= app_url %>"><span>&#129152; </span>Return</a>
             <label id="commit" style="cursor: pointer;"><span>&#9989; </span>Commit</label>
         </div>
     </div>
     <div class="about_div">
-        <center><a href="/app/about">About</label></center>
+        <center><a href="<%= app_url %>/about">About</label></center>
     </div>
 </body>