Update es-419.coffee

Translated some commented lines up to play: category
I am a masters engineer from a well known university in Bogotá, Colombia, Andes university. I am interested in helping you translate for latinamerican spanish. We are actually planning to show Codecombat for a summer camp in our university held for children that are interested in pursuing an engineering career. Thus we are very interested in having a fully translated game for our children and many more from latinamerica.