HQ with NaN delay

[patrickwieth]

It is possible to get HQs into the blockchain with NaN delay by editing a card that is already in the blockchain from non-hq type to HQ type. It will throw an error but the card will still be changed to HQ.
Afterwards the card cannot be found through card search if you set any parameters, as this will lead to a faulty cardobject. If you search without parameters you can find the card as then the cardobject is not validated.