This is a bit of a problem because we list integer values, so if
somebody has less than 1 Kredit than they would still show up. Not sure
what is the best to do here. - but this should be good enough for now.
Kredits are stored on the Token contract as uint256 / bignumbers with 18
decimal points. Just like Ether and required by the ERC20 standard.
So we need to work with bignumbers and format a bignumber value here.