[FIX] website: fix library incompatibility for moves of menus

Since the library nestedSortable was updated to the release 2.1a,
at the below revision:
https://github.com/odoo/odoo/commit/aa19d9edd02756d87056a44340e36568b3183e21
It was no longer possible, in the front-end, to move the menus:
Re-sequence them, put one below another, ...

Indeed, in that piece of code, `.item_id` was never
set with the new release, while it was the case with the former one.
We replace with `.id`, which looks like to have the same behavior.

1 files changed, 2 insertions, 2 deletions

diff --git a/addons/website/static/src/js/website.contentMenu.js b/addons/website/static/src/js/website.contentMenu.js
index aa695857746..f5764ad7fd2 100644
--- a/addons/website/static/src/js/website.contentMenu.js
+++ b/addons/website/static/src/js/website.contentMenu.js
@@ -291,9 +291,9 @@ var EditMenuDialog = widget.Dialog.extend({
         var context = base.get_context();
         // Resequence, re-tree and remove useless data
         new_menu.forEach(function (menu) {
-            if (menu.item_id) {
+            if (menu.id) {
                 levels[menu.depth] = (levels[menu.depth] || 0) + 1;
-                var mobj = self.flat[menu.item_id];
+                var mobj = self.flat[menu.id];
                 mobj.sequence = levels[menu.depth];
                 mobj.parent_id = (menu.parent_id|0) || menu.parent_id || self.root_menu_id;
                 delete(mobj.children);