Fix spec by not raising the error image not found
Fix spec by not raising the error image not found

`GET http://localhost:3000/throbber.gif 404 (Not Found)`

In the meantime, open an issue to remove jquery.jstree from this page: 9677

openfoodfoundation/openfoodnetwork,openfoodfoundation/openfoodnetwork,openfoodfoundation/openfoodnetwork,mkllnk/openfoodnetwork,mkllnk/openfoodnetwork,mkllnk/openfoodnetwork,openfoodfoundation/openfoodnetwork,mkllnk/openfoodnetwork