Removed BTCe and added WEX to exchange_rate.py
Removed BTCe and added WEX to exchange_rate.py

Notice: WEX uses RUR instead of RUB, but we return it as RUB to conform to ISO 4217.
spesmilo/electrum,vialectrum/vialectrum,pooler/electrum-ltc,romanz/electrum,pooler/electrum-ltc,dabura667/electrum,cryptapus/electrum,spesmilo/electrum,wakiyamap/electrum-mona,fyookball/electrum,dabura667/electrum,digitalbitbox/electrum,neocogent/electrum,cryptapus/electrum,kyuupichan/electrum,romanz/electrum,dabura667/electrum,pooler/electrum-ltc,wakiyamap/electrum-mona,neocogent/electrum,asfin/electrum,vialectrum/vialectrum,asfin/electrum,pooler/electrum-ltc,kyuupichan/electrum,wakiyamap/electrum-mona,dabura667/electrum,kyuupichan/electrum,digitalbitbox/electrum,digitalbitbox/electrum,fujicoin/electrum-fjc,digitalbitbox/electrum,fyookball/electrum,wakiyamap/electrum-mona,neocogent/electrum,spesmilo/electrum,vialectrum/vialectrum,spesmilo/electrum,cryptapus/electrum,asfin/electrum,fujicoin/electrum-fjc,fyookball/electrum,fujicoin/electrum-fjc,romanz/electrum