Fixed episode indices in data files to match reordered episodes

Reordered episodes to be sequential (0, 1, 2, 3, ...)

Fixed episode indices in duplicated episodes [17, 18, 19, 20]

Fixed duplicated dataset by adding missing data files for episodes [17, 18, 19, 20]

Duplicated episodes [3, 5, 13, 14] from arminfg/op2reader3_filtered