fix #3028: add info to proxy dialog
fix #3028: add info to proxy dialog

romanz/electrum,pooler/electrum-ltc,dabura667/electrum,romanz/electrum,cryptapus/electrum,asfin/electrum,dabura667/electrum,digitalbitbox/electrum,wakiyamap/electrum-mona,fyookball/electrum,spesmilo/electrum,kyuupichan/electrum,romanz/electrum,fujicoin/electrum-fjc,dabura667/electrum,vialectrum/vialectrum,vialectrum/vialectrum,fujicoin/electrum-fjc,asfin/electrum,neocogent/electrum,digitalbitbox/electrum,digitalbitbox/electrum,kyuupichan/electrum,pooler/electrum-ltc,wakiyamap/electrum-mona,spesmilo/electrum,pooler/electrum-ltc,spesmilo/electrum,pooler/electrum-ltc,fyookball/electrum,neocogent/electrum,dabura667/electrum,cryptapus/electrum,asfin/electrum,neocogent/electrum,spesmilo/electrum,fyookball/electrum,cryptapus/electrum,wakiyamap/electrum-mona,vialectrum/vialectrum,wakiyamap/electrum-mona,fujicoin/electrum-fjc,kyuupichan/electrum,digitalbitbox/electrum