json rpc: eth_getUncleBy fixes
json rpc: eth_getUncleBy fixes

changwu-tw/pyethapp,vaporry/pyethapp,ethereum/pyethapp,heikoheiko/pyethapp,gsalgado/pyethapp,RomanZacharia/pyethapp,RomanZacharia/pyethapp,gsalgado/pyethapp,ethereum/pyethapp,changwu-tw/pyethapp,kustomzone/pyethapp,d-das/pyethapp