(first local commit \o/)

Calculate link to allow Nexedi developers access the ERP5 fields, forms and form actions from it.

* erp5 form gadget handle links to access from and form action
* label field gadget handle links to access field configuration, title
and descriptions translations
* page action handle all links to access workflows and portal type document

This reverts commit e50d05af.

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>