Fix for exception in chart export with Chrome
Fix for exception in chart export with Chrome

The entity "nbsp" was referenced, but not declared.
	at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstractTranscoder.java:136)
	at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:156)
	at org.saiku.web.svg.BatikConverter.convert(Converter.java:86)
	at org.saiku.web.rest.resources.ExporterResource.exportChart(ExporterResource.java:166)
	at org.saiku.web.rest.resources.ExporterResource$$FastClassByCGLIB$$e2189a5.invoke(<generated>)

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