qt main window: only show "Channels" tab if wallet has lightning
qt main window: only show "Channels" tab if wallet has lightning

wakiyamap/electrum-mona,pooler/electrum-ltc,vialectrum/vialectrum,pooler/electrum-ltc,wakiyamap/electrum-mona,wakiyamap/electrum-mona,pooler/electrum-ltc,wakiyamap/electrum-mona,pooler/electrum-ltc,vialectrum/vialectrum,spesmilo/electrum,spesmilo/electrum,spesmilo/electrum,vialectrum/vialectrum,spesmilo/electrum