[FIX] correctly call on_close callback when clicking on a dialog's close button
[FIX] correctly call on_close callback when clicking on a dialog's close button

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