fix too autoescape for sponsorship's localized_text
fix too autoescape for sponsorship's localized_text

pyconjp/pyconjp-website,smellman/sotmjp-website,osmfj/sotmjp-website,pyconjp/pyconjp-website,smellman/sotmjp-website,osmfj/sotmjp-website,osmfj/sotmjp-website,smellman/sotmjp-website,osmfj/sotmjp-website,pyconjp/pyconjp-website,smellman/sotmjp-website,pyconjp/pyconjp-website