HTMLJsoup: added further parsing, because parsing just once wasn't enough to get text from html (problem occured when processing slide content of old platform)
HTMLJsoup: added further parsing, because parsing just once wasn't enough to get text from html (problem occured when processing slide content of old platform)

slidewiki/nlp-service,slidewiki/nlp-service,slidewiki/nlp-service,slidewiki/nlp-service