[FIX] problem in read_group, caused an exception "cannot read 'lang' in undefined" in a lot of views
[FIX] problem in read_group, caused an exception "cannot read 'lang' in undefined" in a lot of views


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