Add a permission for auto-save and make sure on Page Advance Save on Progress Bar

[DiegoPino]

What?

We have webform advance on the Progress Bar. WE need to make sure the autosave that is trigged on "Save" at the webform level triggers every time we move forward/back. And enable a Save Draft button that does the same respecting settings and permissions.

This also requires the long pending Settings Form for the permission

[DiegoPino]

Extra notes here:

Auto Save on "Editing" and existing ADO makes no sense. It would be confusing for the user because an EDIT action implies you are dealing with the original Saved Data and not a temporary state

Solution is to disabled drafting at all during an ADO edit operation and that requires code on the webform handler