Allow mining without pow check
Allow mining without pow check

LefterisJP/mix,yann300/mix,LefterisJP/mix,tomthebuzz/mix,vaporry/mix,tomthebuzz/mix,chriseth/mix,ethereum/mix,yann300/mix,vaporry/mix,chriseth/mix,LefterisJP/mix,vaporry/mix,LianaHus/mix,ethereum/mix,chriseth/mix,yann300/mix,LianaHus/mix,LianaHus/mix,ethereum/mix,tomthebuzz/mix