Send no ID for batch request errors
Send no ID for batch request errors

Fixes #54

Crowndev/electrumx,Groestlcoin/electrumx-grs,Crowndev/electrumx,thelazier/electrumx,shsmith/electrumx,bauerj/electrumx,erasmospunk/electrumx,erasmospunk/electrumx,thelazier/electrumx,bauerj/electrumx,shsmith/electrumx,Groestlcoin/electrumx-grs