improve UTILITY category part of help
improve UTILITY category part of help

cancoin/libbitcoin-explorer,GroestlCoin/libgroestlcoin-explorer,cancoin/libbitcoin-explorer,tuomassiren/libbitcoin-explorer,GroestlCoin/libgroestlcoin-explorer,libmetrocoin/libmetrocoin-explorer,libmetrocoin/libmetrocoin-explorer,libtetcoin/libtetcoin-explorer,GroestlCoin/libgroestlcoin-explorer,libtetcoin/libtetcoin-explorer,tuomassiren/libbitcoin-explorer