Add fess for hitbtc (don't account for rebates yet)
Add fess for hitbtc (don't account for rebates yet)

stachon/XChange,LeonidShamis/XChange,ww3456/XChange,chrisrico/XChange,andre77/XChange,TSavo/XChange,Panchen/XChange,douggie/XChange,timmolter/XChange