[IMP] don't make the diagram controller inherit from View, there's no point
[IMP] don't make the diagram controller inherit from View, there's no point

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