[FIX] remove events during re-render, so they're not registered multiple times
[FIX] remove events during re-render, so they're not registered multiple times

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