<typeahead>: better validity handling for case  !editable && !required  + set badInput validity when user did not choose in menu (for !editable)
<typeahead>: better validity handling for case  !editable && !required  + set badInput validity when user did not choose in menu (for !editable)

prigaux/compte-externe,prigaux/compte-externe,prigaux/compte-externe