add PoS and PoW difficulty to tooltip
add PoS and PoW difficulty to tooltip

penek/novacoin,penek/novacoin,elambert2014/novacoin,penek/novacoin,elambert2014/novacoin,novacoin-project/novacoin,fsb4000/novacoin,elambert2014/novacoin,penek/novacoin,elambert2014/novacoin,byncoin-project/byncoin,byncoin-project/byncoin,fsb4000/novacoin,fsb4000/novacoin,novacoin-project/novacoin,byncoin-project/byncoin,fsb4000/novacoin,fsb4000/novacoin,penek/novacoin,elambert2014/novacoin,novacoin-project/novacoin,elambert2014/novacoin,penek/novacoin,fsb4000/novacoin,byncoin-project/byncoin,byncoin-project/byncoin,byncoin-project/byncoin,novacoin-project/novacoin,novacoin-project/novacoin,novacoin-project/novacoin