[FIX] o2m validation workflow for lists, to match new edition methods
[FIX] o2m validation workflow for lists, to match new edition methods

akretion/openerp-web,akretion/openerp-web,havt/openerp-web,havt/openerp-web,havt/openerp-web,akretion/openerp-web,havt/openerp-web,havt/openerp-web