[fix] some bugs related to validation + removed save button in o2m
[fix] some bugs related to validation + removed save button in o2m


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