[IMP] Calendar: No need to do default_get by hand
[IMP] Calendar: No need to do default_get by hand

The form will already do a default_get on do_show() when index is null


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