exchange rates: factorize getter functions
exchange rates: factorize getter functions

argentumproject/electrum-arg,aasiutin/electrum,lbryio/lbryum,cryptapus/electrum-uno,fireduck64/electrum,fujicoin/electrum-fjc,fujicoin/electrum-fjc,dashpay/electrum-dash,asfin/electrum,kyuupichan/electrum,fyookball/electrum,dashpay/electrum-dash,FairCoinTeam/electrum-fair,cryptapus/electrum,spesmilo/electrum,cryptapus/electrum-uno,wakiyamap/electrum-mona,cryptapus/electrum-myr,cryptapus/electrum-uno,wakiyamap/electrum-mona,procrasti/electrum,pknight007/electrum-vtc,dabura667/electrum,digitalbitbox/electrum,digitalbitbox/electrum,protonn/Electrum-Cash,FairCoinTeam/electrum-fair,spesmilo/electrum,cryptapus/electrum,romanz/electrum,FairCoinTeam/electrum-fair,vialectrum/vialectrum,fireduck64/electrum,neocogent/electrum,pknight007/electrum-vtc,argentumproject/electrum-arg,romanz/electrum,fyookball/electrum,protonn/Electrum-Cash,aasiutin/electrum,FairCoinTeam/electrum-fair,vertcoin/electrum-vtc,fyookball/electrum,dabura667/electrum,imrehg/electrum,asfin/electrum,spesmilo/electrum,aasiutin/electrum,dashpay/electrum-dash,molecular/electrum,procrasti/electrum,molecular/electrum,spesmilo/electrum,lbryio/lbryum,procrasti/electrum,fireduck64/electrum,cryptapus/electrum,argentumproject/electrum-arg,protonn/Electrum-Cash,cryptapus/electrum-myr,fireduck64/electrum,digitalbitbox/electrum,vertcoin/electrum-vtc,dabura667/electrum,digitalbitbox/electrum,dashpay/electrum-dash,kyuupichan/electrum,cryptapus/electrum-myr,neocogent/electrum,pooler/electrum-ltc,kyuupichan/electrum,aasiutin/electrum,pooler/electrum-ltc,vertcoin/electrum-vtc,wakiyamap/electrum-mona,vialectrum/vialectrum,imrehg/electrum,neocogent/electrum,cryptapus/electrum-uno,fujicoin/electrum-fjc,pooler/electrum-ltc,molecular/electrum,protonn/Electrum-Cash,argentumproject/electrum-arg,vialectrum/vialectrum,pknight007/electrum-vtc,pknight007/electrum-vtc,cryptapus/electrum-myr,romanz/electrum,wakiyamap/electrum-mona,dabura667/electrum,vertcoin/electrum-vtc,asfin/electrum,imrehg/electrum,procrasti/electrum,molecular/electrum,imrehg/electrum,pooler/electrum-ltc