Get older votes (hash-codes)

[SmithPeder]

The frontend now only stores one hash, and you have to remember/save the hash for your vote if you want to get older votes. Not an important issue but something we can't think about. Of course, we cant store a list of hash- codes for each user, as this would directly tie the user their votes, but maybe we can store a list of hash-codes in the session storage, and not just the latest.