Update sx-gui.sh
Update sx-gui.sh

Reconciles the pull request from ABISprotocol into code.
BWallet/sx,cancoin/libbitcoin-explorer,GroestlCoin/libgroestlcoin-explorer,GroestlCoin/libgroestlcoin-explorer,BWallet/sx,libtetcoin/libtetcoin-explorer,GroestlCoin/libgroestlcoin-explorer,libmetrocoin/libmetrocoin-explorer,libtetcoin/libtetcoin-explorer,BWallet/sx,tuomassiren/libbitcoin-explorer,libmetrocoin/libmetrocoin-explorer,tuomassiren/libbitcoin-explorer,cancoin/libbitcoin-explorer