Reverts 037a7ed3
More details, see 574d45a6

This should prevent the browser to handle form submit (and so, prevent changing browser URL).

Change the icon to an exclamation mark in case of error.

It is not necessary to say that a cleaner solution is needed...

Going back to non editable mode is available on the tabs view.
Select URL is by default a link to the parent document.

The only supported list_method (ie, compatible with Jio) are: portal_catalog, searchFolder, objectValues

Move loading notification in the header (drop JQM global notification).
Inform user when some changes were made in the form.
Add form submit notification.
Allow to trigger the form submit from the header button.
Do not submit any form if one gadget field validation constraint fails. Display the error next to the label.