Convert table config updates to use REST API

netbox/project-static/js/tableconfig.js

@@ -0,0 +1,25 @@
+$(document).ready(function() {
+    $('form.tableconfigform').submit(function(event) {
+        event.preventDefault();
+        let table_name = this.getAttribute('data-table-name');
+        let data = {"tables": {}};
+        data['tables'][table_name] = {};
+        data['tables'][table_name]['columns'] = $('#id_columns').val();
+        $.ajax({
+            url: netbox_api_path + 'users/config/',
+            async: true,
+            contentType: 'application/json',
+            dataType: 'json',
+            type: 'PATCH',
+            beforeSend: function(xhr, settings) {
+                xhr.setRequestHeader("X-CSRFToken", netbox_csrf_token);
+            },
+            data: JSON.stringify(data),
+        }).done(function () {
+            // Reload the page
+            window.location.reload(true);
+        }).fail(function (xhr, status, error) {
+            alert("Failed: " + error);
+        });
+    });
+});