[IMP] Improvement/changes to the http request/response API.

- Get rid of LazyResponses
- Made website.render() an alias to request.render() [just kept in case this is merged in saas-3 but should be removed completely in favor of request.render()]

Need server/trunk's rev#5102

bzr revid: fme@openerp.com-20140226164551-d42a3g057grr722y