refactor: Use bilingual_str::empty()
refactor: Use bilingual_str::empty()

rnicoll/bitcoin,anditto/bitcoin,practicalswift/bitcoin,GroestlCoin/GroestlCoin,lateminer/bitcoin,jambolo/bitcoin,namecoin/namecoin-core,litecoin-project/litecoin,pstratem/bitcoin,Xekyo/bitcoin,namecoin/namecoin-core,instagibbs/bitcoin,bitcoin/bitcoin,alecalve/bitcoin,domob1812/namecore,fanquake/bitcoin,jonasschnelli/bitcoin,fujicoin/fujicoin,anditto/bitcoin,domob1812/namecore,bitcoin/bitcoin,fanquake/bitcoin,Xekyo/bitcoin,pstratem/bitcoin,jamesob/bitcoin,Sjors/bitcoin,sstone/bitcoin,dscotese/bitcoin,GroestlCoin/bitcoin,midnightmagic/bitcoin,cdecker/bitcoin,n1bor/bitcoin,sipsorcery/bitcoin,dscotese/bitcoin,sstone/bitcoin,Xekyo/bitcoin,namecoin/namecoin-core,instagibbs/bitcoin,Sjors/bitcoin,n1bor/bitcoin,GroestlCoin/GroestlCoin,AkioNak/bitcoin,jlopp/statoshi,yenliangl/bitcoin,lateminer/bitcoin,bitcoinknots/bitcoin,GroestlCoin/GroestlCoin,qtumproject/qtum,pstratem/bitcoin,rnicoll/bitcoin,tecnovert/particl-core,anditto/bitcoin,fujicoin/fujicoin,bitcoin/bitcoin,rnicoll/dogecoin,alecalve/bitcoin,ajtowns/bitcoin,sstone/bitcoin,cdecker/bitcoin,anditto/bitcoin,bitcoinsSG/bitcoin,mm-s/bitcoin,particl/particl-core,mruddy/bitcoin,cdecker/bitcoin,yenliangl/bitcoin,Sjors/bitcoin,namecoin/namecoin-core,EthanHeilman/bitcoin,mm-s/bitcoin,cdecker/bitcoin,jambolo/bitcoin,jnewbery/bitcoin,mm-s/bitcoin,EthanHeilman/bitcoin,rnicoll/bitcoin,mruddy/bitcoin,bitcoinknots/bitcoin,ElementsProject/elements,EthanHeilman/bitcoin,litecoin-project/litecoin,instagibbs/bitcoin,fujicoin/fujicoin,prusnak/bitcoin,kallewoof/bitcoin,mm-s/bitcoin,kallewoof/bitcoin,bitcoinsSG/bitcoin,bitcoinknots/bitcoin,GroestlCoin/bitcoin,AkioNak/bitcoin,jambolo/bitcoin,jonasschnelli/bitcoin,domob1812/namecore,jamesob/bitcoin,jnewbery/bitcoin,domob1812/bitcoin,pataquets/namecoin-core,n1bor/bitcoin,midnightmagic/bitcoin,practicalswift/bitcoin,rnicoll/bitcoin,prusnak/bitcoin,anditto/bitcoin,ajtowns/bitcoin,rnicoll/dogecoin,prusnak/bitcoin,sipsorcery/bitcoin,sstone/bitcoin,cdecker/bitcoin,dscotese/bitcoin,pataquets/namecoin-core,qtumproject/qtum,pataquets/namecoin-core,GroestlCoin/bitcoin,achow101/bitcoin,GroestlCoin/GroestlCoin,jamesob/bitcoin,achow101/bitcoin,kallewoof/bitcoin,Xekyo/bitcoin,particl/particl-core,achow101/bitcoin,fanquake/bitcoin,tecnovert/particl-core,andreaskern/bitcoin,qtumproject/qtum,MeshCollider/bitcoin,MarcoFalke/bitcoin,namecoin/namecoin-core,ajtowns/bitcoin,tecnovert/particl-core,jlopp/statoshi,jlopp/statoshi,dscotese/bitcoin,yenliangl/bitcoin,AkioNak/bitcoin,instagibbs/bitcoin,domob1812/namecore,practicalswift/bitcoin,jnewbery/bitcoin,andreaskern/bitcoin,mm-s/bitcoin,jamesob/bitcoin,rnicoll/dogecoin,fanquake/bitcoin,sstone/bitcoin,jlopp/statoshi,JeremyRubin/bitcoin,fujicoin/fujicoin,fujicoin/fujicoin,rnicoll/dogecoin,instagibbs/bitcoin,namecoin/namecore,ajtowns/bitcoin,jnewbery/bitcoin,apoelstra/bitcoin,EthanHeilman/bitcoin,lateminer/bitcoin,apoelstra/bitcoin,AkioNak/bitcoin,andreaskern/bitcoin,sipsorcery/bitcoin,MeshCollider/bitcoin,Sjors/bitcoin,fujicoin/fujicoin,mruddy/bitcoin,AkioNak/bitcoin,andreaskern/bitcoin,namecoin/namecore,JeremyRubin/bitcoin,dscotese/bitcoin,ElementsProject/elements,AkioNak/bitcoin,jamesob/bitcoin,MarcoFalke/bitcoin,achow101/bitcoin,JeremyRubin/bitcoin,pstratem/bitcoin,ajtowns/bitcoin,namecoin/namecore,midnightmagic/bitcoin,bitcoinsSG/bitcoin,yenliangl/bitcoin,MeshCollider/bitcoin,jlopp/statoshi,namecoin/namecore,mruddy/bitcoin,ElementsProject/elements,lateminer/bitcoin,lateminer/bitcoin,domob1812/bitcoin,bitcoin/bitcoin,jlopp/statoshi,GroestlCoin/bitcoin,bitcoinsSG/bitcoin,ElementsProject/elements,particl/particl-core,prusnak/bitcoin,jambolo/bitcoin,cdecker/bitcoin,rnicoll/bitcoin,fanquake/bitcoin,instagibbs/bitcoin,prusnak/bitcoin,pstratem/bitcoin,sipsorcery/bitcoin,JeremyRubin/bitcoin,JeremyRubin/bitcoin,kallewoof/bitcoin,domob1812/bitcoin,kallewoof/bitcoin,jambolo/bitcoin,particl/particl-core,GroestlCoin/GroestlCoin,n1bor/bitcoin,GroestlCoin/bitcoin,midnightmagic/bitcoin,jamesob/bitcoin,sipsorcery/bitcoin,andreaskern/bitcoin,bitcoinsSG/bitcoin,practicalswift/bitcoin,MeshCollider/bitcoin,pstratem/bitcoin,yenliangl/bitcoin,kallewoof/bitcoin,alecalve/bitcoin,qtumproject/qtum,pataquets/namecoin-core,domob1812/bitcoin,fanquake/bitcoin,bitcoinsSG/bitcoin,alecalve/bitcoin,MarcoFalke/bitcoin,litecoin-project/litecoin,Xekyo/bitcoin,litecoin-project/litecoin,rnicoll/dogecoin,n1bor/bitcoin,JeremyRubin/bitcoin,GroestlCoin/GroestlCoin,qtumproject/qtum,tecnovert/particl-core,bitcoin/bitcoin,jonasschnelli/bitcoin,tecnovert/particl-core,MeshCollider/bitcoin,EthanHeilman/bitcoin,bitcoin/bitcoin,jambolo/bitcoin,domob1812/bitcoin,bitcoinknots/bitcoin,sstone/bitcoin,particl/particl-core,litecoin-project/litecoin,bitcoinknots/bitcoin,practicalswift/bitcoin,tecnovert/particl-core,mruddy/bitcoin,qtumproject/qtum,qtumproject/qtum,GroestlCoin/bitcoin,ajtowns/bitcoin,dscotese/bitcoin,pataquets/namecoin-core,n1bor/bitcoin,midnightmagic/bitcoin,apoelstra/bitcoin,achow101/bitcoin,mm-s/bitcoin,anditto/bitcoin,practicalswift/bitcoin,MarcoFalke/bitcoin,mruddy/bitcoin,Xekyo/bitcoin,jonasschnelli/bitcoin,yenliangl/bitcoin,alecalve/bitcoin,alecalve/bitcoin,andreaskern/bitcoin,ElementsProject/elements,midnightmagic/bitcoin,particl/particl-core,apoelstra/bitcoin,domob1812/namecore,EthanHeilman/bitcoin,prusnak/bitcoin,jnewbery/bitcoin,namecoin/namecore,namecoin/namecoin-core,MeshCollider/bitcoin,litecoin-project/litecoin,ElementsProject/elements,domob1812/namecore,apoelstra/bitcoin,achow101/bitcoin,sipsorcery/bitcoin,Sjors/bitcoin,jonasschnelli/bitcoin,rnicoll/bitcoin,apoelstra/bitcoin,MarcoFalke/bitcoin,pataquets/namecoin-core,lateminer/bitcoin,namecoin/namecore,MarcoFalke/bitcoin,domob1812/bitcoin