Bulk file upload form submission fails on chrome as form is not included in document body.

[Andrew-SK]

Fails with the following warning:

Form submission canceled because the form is not connected

This is due to a spec change enforced in Chrome v56 which requires that a form must be included in the document before it can be submitted.

This can be fixed with a simple one line change to bulk.js appending the form to the document body prior to submission.

E.g.

$(document.body).append($form);
$form.submit();