options: flip listenonion to false if not listening
options: flip listenonion to false if not listening

If the user has unchecked "Allow incoming connections" in
`Settings->Options...->Network` then `fListen=false` is saved in
`~/.config/Bitcoin/Bitcoin-Qt.conf`. This flips `-listen` to `false`
during startup, but leaves `-listenonion` to `true`.

This flipping of `-listen` is done in `OptionsModel::Init()` after
`InitParameterInteraction()` has been executed which would have flipped
`-listenonion`, should it have seen `-listen` being `false`
(this is a difference between `bitcoind` and `bitcoin-qt`).

Fixes: https://github.com/bitcoin-core/gui/issues/567

mruddy/bitcoin,sstone/bitcoin,namecoin/namecore,lateminer/bitcoin,kallewoof/bitcoin,andreaskern/bitcoin,tecnovert/particl-core,andreaskern/bitcoin,AkioNak/bitcoin,lateminer/bitcoin,fujicoin/fujicoin,instagibbs/bitcoin,bitcoinsSG/bitcoin,jambolo/bitcoin,jlopp/statoshi,GroestlCoin/bitcoin,jambolo/bitcoin,mruddy/bitcoin,Xekyo/bitcoin,jambolo/bitcoin,kallewoof/bitcoin,namecoin/namecoin-core,jlopp/statoshi,andreaskern/bitcoin,sstone/bitcoin,sstone/bitcoin,GroestlCoin/bitcoin,jambolo/bitcoin,sstone/bitcoin,namecoin/namecore,fujicoin/fujicoin,AkioNak/bitcoin,fanquake/bitcoin,tecnovert/particl-core,kallewoof/bitcoin,domob1812/bitcoin,achow101/bitcoin,bitcoin/bitcoin,instagibbs/bitcoin,ajtowns/bitcoin,andreaskern/bitcoin,AkioNak/bitcoin,lateminer/bitcoin,AkioNak/bitcoin,anditto/bitcoin,instagibbs/bitcoin,sipsorcery/bitcoin,particl/particl-core,tecnovert/particl-core,kallewoof/bitcoin,namecoin/namecore,AkioNak/bitcoin,jamesob/bitcoin,Xekyo/bitcoin,domob1812/bitcoin,GroestlCoin/bitcoin,anditto/bitcoin,AkioNak/bitcoin,bitcoinsSG/bitcoin,dscotese/bitcoin,anditto/bitcoin,namecoin/namecoin-core,domob1812/bitcoin,bitcoin/bitcoin,particl/particl-core,achow101/bitcoin,bitcoin/bitcoin,dscotese/bitcoin,sstone/bitcoin,fanquake/bitcoin,mruddy/bitcoin,jamesob/bitcoin,jlopp/statoshi,particl/particl-core,dscotese/bitcoin,ajtowns/bitcoin,bitcoinsSG/bitcoin,jamesob/bitcoin,Xekyo/bitcoin,anditto/bitcoin,GroestlCoin/GroestlCoin,particl/particl-core,jambolo/bitcoin,GroestlCoin/bitcoin,namecoin/namecore,fujicoin/fujicoin,lateminer/bitcoin,GroestlCoin/GroestlCoin,fujicoin/fujicoin,bitcoin/bitcoin,sipsorcery/bitcoin,fanquake/bitcoin,bitcoin/bitcoin,namecoin/namecoin-core,achow101/bitcoin,mruddy/bitcoin,kallewoof/bitcoin,Xekyo/bitcoin,andreaskern/bitcoin,sstone/bitcoin,namecoin/namecore,mruddy/bitcoin,domob1812/bitcoin,anditto/bitcoin,jamesob/bitcoin,jlopp/statoshi,fanquake/bitcoin,Xekyo/bitcoin,ajtowns/bitcoin,GroestlCoin/GroestlCoin,ajtowns/bitcoin,domob1812/bitcoin,instagibbs/bitcoin,particl/particl-core,namecoin/namecore,bitcoinsSG/bitcoin,bitcoinsSG/bitcoin,jlopp/statoshi,namecoin/namecoin-core,jambolo/bitcoin,tecnovert/particl-core,jlopp/statoshi,namecoin/namecoin-core,sipsorcery/bitcoin,GroestlCoin/bitcoin,achow101/bitcoin,achow101/bitcoin,dscotese/bitcoin,GroestlCoin/GroestlCoin,mruddy/bitcoin,fujicoin/fujicoin,achow101/bitcoin,lateminer/bitcoin,kallewoof/bitcoin,andreaskern/bitcoin,jamesob/bitcoin,instagibbs/bitcoin,GroestlCoin/bitcoin,tecnovert/particl-core,fanquake/bitcoin,ajtowns/bitcoin,lateminer/bitcoin,Xekyo/bitcoin,bitcoinsSG/bitcoin,domob1812/bitcoin,instagibbs/bitcoin,dscotese/bitcoin,sipsorcery/bitcoin,jamesob/bitcoin,fujicoin/fujicoin,particl/particl-core,sipsorcery/bitcoin,tecnovert/particl-core,anditto/bitcoin,bitcoin/bitcoin,namecoin/namecoin-core,GroestlCoin/GroestlCoin,GroestlCoin/GroestlCoin,ajtowns/bitcoin,sipsorcery/bitcoin,fanquake/bitcoin,dscotese/bitcoin