DeviceMgr: nicer message when pairing
DeviceMgr: nicer message when pairing

The experience is a bit better if the user is prompted to connect,
instead of showing an error.

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