improve default chart options
improve default chart options

OSBI/saiku,OSBI/saiku,ZauR77/saiku-ui,qqming113/saiku,wwf830527/saiku,newenter/saiku,bisone/saiku,customme/saiku,witcxc/saiku,brenopolanski/saiku-ui,devgateway/ccrs-saiku,customme/saiku,bisone/saiku,zegang/saiku,wwf830527/saiku,devgateway/ccrs-saiku,wtstengshen/saiku,OSBI/saiku,NAUMEN-GP/saiku,qqming113/saiku,standino/saiku,newenter/saiku,GermainSIGETY/sauceDallas-saiku3-ui,wtstengshen/saiku,qixiaobo/saiku-self,qqming113/saiku,bisone/saiku,zegang/saiku,standino/saiku,bisone/saiku,newenter/saiku,hengyuan/saiku,qqming113/saiku,wtstengshen/saiku,zegang/saiku,dasbh/saiku,NAUMEN-GP/saiku,dasbh/saiku,NAUMEN-GP/saiku,wwf830527/saiku,NAUMEN-GP/saiku,devgateway/ccrs-saiku,hengyuan/saiku,hengyuan/saiku,wwf830527/saiku,qixiaobo/saiku-self,customme/saiku,witcxc/saiku,dasbh/saiku,OSBI/saiku-ui,pstoellberger/saiku-ui,witcxc/saiku,standino/saiku,hengyuan/saiku,wwf830527/saiku,qixiaobo/saiku-self,qixiaobo/saiku-self,zegang/saiku,dasbh/saiku,qqming113/saiku,wtstengshen/saiku,OSBI/saiku,devgateway/ccrs-saiku,dasbh/saiku,OSBI/saiku-ui,bisone/saiku,newenter/saiku,customme/saiku,standino/saiku,qqming113/saiku,brenopolanski/saiku-ui,standino/saiku,devgateway/ccrs-saiku,wtstengshen/saiku,standino/saiku,NAUMEN-GP/saiku,OSBI/saiku,zegang/saiku,wtstengshen/saiku,devgateway/ccrs-saiku,pstoellberger/saiku-ui,dasbh/saiku,bisone/saiku,zegang/saiku