storage upgrade v16: fix flawed v14 upgrade for imported addresses
storage upgrade v16: fix flawed v14 upgrade for imported addresses

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