kivy: fix on_history
kivy: fix on_history

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