Fixed firstbits bug affecting side chains.
Fixed firstbits bug affecting side chains.

jeromewu/bitcoin-abe-opennet,muchbeli/bitcoin-abe,BuckyGreen/latiumexplorer,machado-rev/HTMLCoinExplorer,MatthewLM/PeercoinAbeExplorer,muchbeli/bitcoin-abe,ultracoindev/ultracoin-abe,ultracoindev/ultracoin-abe,BuckyGreen/latiumexplorer,Serya05/bitcoin-abe,ultracoindev/ultracoin-abe,jeromewu/bitcoin-abe-opennet,machinecoin-project/machinecoin-blockchainexplorer-abe,UdjinM6/darkcoin-abe,mmitech/bitcoin-abe,jeorgen/bitcoin-abe,BuckyGreen/latiumexplorer,gjhiggins/altcoin-abe,jeorgen/bitcoin-abe,Max-Coin/maxcoin-abe,MatthewLM/PeercoinAbeExplorer,Rimbit/RimbitExplorer,leadcoin-reboot/leadcoin-abe,mmitech/bitcoin-abe,gjhiggins/chaincoin-abe,MatthewLM/PeercoinAbeExplorer,Rimbit/RimbitExplorer,Serya05/bitcoin-abe,gjhiggins/abe-bee2,Max-Coin/maxcoin-abe,MatthewLM/PeercoinAbeExplorer,gjhiggins/altcoin-abe,cryptapus/bitcoin-abe,Rimbit/RimbitExplorer,n00bsys0p/altcoin-abe,Dilmacoin/dilmacoin-abe,Dilmacoin/dilmacoin-abe,Cybnate/NuBits-Abe-explorer,Cybnate/NuBits-Abe-explorer,gjhiggins/abe-bee2,cryptapus/bitcoin-abe,ultracoindev/ultracoin-abe,machado-rev/HTMLCoinExplorer,machado-rev/HTMLCoinExplorer,UdjinM6/darkcoin-abe,Cybnate/NuBits-Abe-explorer,CraigsCoin/abe-craigscoin,machado-rev/HTMLCoinExplorer,ultracoindev/ultracoin-abe,leadcoin-reboot/leadcoin-abe,Cybnate/NuBits-Abe-explorer,CraigsCoin/abe-craigscoin,jonnynewbs/bitcoin-abe,gjhiggins/chaincoin-abe,n00bsys0p/altcoin-abe,machinecoin-project/machinecoin-blockchainexplorer-abe,BuckyGreen/latiumexplorer,muchbeli/bitcoin-abe,gjhiggins/abe-bee2,jonnynewbs/bitcoin-abe,Rimbit/RimbitExplorer,muchbeli/bitcoin-abe,Cybnate/NuBits-Abe-explorer