Now selection fields on m2o query the records directly
wip
fix
[IMP] Altered behavior of form selection fields when used on many 2 one. Now it will query directly
the possible selections from the server instead of using the data sent by the fields_view_get. This
allows to dynamically change the possible values during edition with a domain on the selection field.
[FIX] Bug in form view. When a on_change alters the domain of a field, the view_content_has_changed event is
triggered *before* we alter the domain of the field. So, it is not possible for the fields to really know
when they have to re-calculate their domain.