This reverts commit e50d05af.

XXX check the length of jio_key instead (subdoc only)

Do not access form submission REQUEST from the listbox list method,
as it is rendered asynchronously in ERP5JS

This reverts commit 35b2c024.

Allow edition in the new UI

This make everything slow as hell and prevent to quickly save.

Example: <h2 class="foo">bar</h2> => <h3 class="foo">bar</h3>

Changing the language and browsing to another web section require to fully refresh the page.

This breaks the previous gadget API.

See merge request nexedi/erp5!1282

Previously this would be rendered as empty String
(unless we had a hidden field to define precision)

Commit adds also testListboxZeroValue in  erp5_web_renderjs_ui_test

See merge request nexedi/erp5!1173

See merge request nexedi/erp5!1262