fix parser for index list for person in work index
a index entry nested in a different index type, e.g. a (fictional) person listed in the index of works, the list name was not pared correctly. this MR closes #134 (closed)
a index entry nested in a different index type, e.g. a (fictional) person listed in the index of works, the list name was not pared correctly. this MR closes #134 (closed)