Default widget linked/forked control: view/reset/setAsDefault forked (all Nuxeo version)

> From the advanced field configuration screen, on top on the "Default View" section, a button allow to show every place where the default view has been forked.
> It appears in a popup, there are link to go to the corresponding places
> A button allow to reset the given layout's widget from the popup
> A button allow to use the forked conf as the default conf