Fix IRC flood issues
Fix IRC flood issues

Tweaked version of suggestions from Valesi, petrkr, and bauerj.
Fixes #93

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