[ADD] QWeb: added warning for t-set with t-value plus node children
[ADD] QWeb: added warning for t-set with t-value plus node children


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