Update for notifynewtxs to notifyreceived rename.
Update for notifynewtxs to notifyreceived rename.

The websocket extension command to register for notifications when an
address receives funds has been renamed.  This commit catches up to the
change.

ppcsuite/ppcd-old,Cleawing/btcd,btcsuitereleases/btcd,BitGo/prova,DanielKrawisz/btcd,jrick/btcd,cqswxj2013/btcd,qchain/btcd,tb00/btcd,hectorj/btcd,ppcsuite/ppcd,Evil-Coin/Evil,runeaune/btcd,btcsuite/btcd,Cleawing/btcd,CryptocurrencyCabal/htcd,davecgh/btcd,btcsuite/btcd,FactomProject/btcd,pkothbauer/btcd,Dirbaio/btcd,mathiasrw/btcd,ltcsuite/ltcd,hectorj/btcd,1d4Nf6/btcd,dan-da/btcd,Evil-Coin/Evil,soapboxsys/ombfullnode,jongillham/btcd,jrick/dcrd,danoctavian/btcd,davecgh/btcd,Roasbeef/btcd,soapboxsys/ombfullnode,dajohi/btcd,BitGo/prova,qchain/btcd,jrick/dcrd,Dirbaio/btcd,wallclockbuilder/btcd,aakselrod/btcd,stevenroose/btcd,sysbot/btcd,stevenroose/btcd,tb00/btcd,decred/dcrd,Dirbaio/btcd,sysbot/btcd,wallclockbuilder/btcd,jongillham/btcd,Roasbeef/btcd,runeaune/btcd,jimmysong/btcd,glv2/ppcd,FactomProject/btcd,jcmincke/dcrd,btcsuitereleases/btcd,adiabat/btcd,Stash-Crypto/btcd,Stash-Crypto/btcd,jcmincke/dcrd,ppcsuite/ppcd-old,glv2/ppcd,toddfries/btcd,aakselrod/btcd,cqswxj2013/btcd,pkothbauer/btcd,decred/dcrd,CryptocurrencyCabal/htcd,dajohi/btcd,jrick/btcd,jrick/btcd,mathiasrw/btcd,DanielKrawisz/btcd,adiabat/btcd,cjepson/btcd,danoctavian/btcd,1d4Nf6/btcd,dan-da/btcd,cjepson/btcd,dajohi/btcd,jcmincke/dcrd,jimmysong/btcd,toddfries/btcd,ltcsuite/ltcd,ppcsuite/ppcd