adjust nvd3 chart height and make rule more strict
adjust nvd3 chart height and make rule more strict

ch1c4um/pfsense,BlackstarGroup/pfsense,ch1c4um/pfsense,dennypage/pfsense,NOYB/pfsense,NOYB/pfsense,phil-davis/pfsense,jxmx/pfsense,dennypage/pfsense,dennypage/pfsense,jxmx/pfsense,NewEraCracker/pfsense,NOYB/pfsense,pfsense/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,brunostein/pfsense,phil-davis/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,brunostein/pfsense,jxmx/pfsense,dennypage/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,BlackstarGroup/pfsense,phil-davis/pfsense,ch1c4um/pfsense,ch1c4um/pfsense,pfsense/pfsense,pfsense/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,brunostein/pfsense