adds hover effect
adds hover effect

future-analytics/cartodb,thorncp/cartodb,UCL-ShippingGroup/cartodb-1,codeandtheory/cartodb,splashblot/dronedb,splashblot/dronedb,future-analytics/cartodb,nyimbi/cartodb,nuxcode/cartodb,dbirchak/cartodb,dbirchak/cartodb,dbirchak/cartodb,CartoDB/cartodb,bloomberg/cartodb,DigitalCoder/cartodb,nuxcode/cartodb,thorncp/cartodb,splashblot/dronedb,future-analytics/cartodb,bloomberg/cartodb,raquel-ucl/cartodb,CartoDB/cartodb,UCL-ShippingGroup/cartodb-1,CartoDB/cartodb,nyimbi/cartodb,CartoDB/cartodb,thorncp/cartodb,UCL-ShippingGroup/cartodb-1,UCL-ShippingGroup/cartodb-1,thorncp/cartodb,nuxcode/cartodb,raquel-ucl/cartodb,raquel-ucl/cartodb,nyimbi/cartodb,codeandtheory/cartodb,splashblot/dronedb,CartoDB/cartodb,nyimbi/cartodb,future-analytics/cartodb,bloomberg/cartodb,future-analytics/cartodb,DigitalCoder/cartodb,bloomberg/cartodb,nuxcode/cartodb,UCL-ShippingGroup/cartodb-1,DigitalCoder/cartodb,codeandtheory/cartodb,raquel-ucl/cartodb,nuxcode/cartodb,thorncp/cartodb,dbirchak/cartodb,raquel-ucl/cartodb,bloomberg/cartodb,codeandtheory/cartodb,dbirchak/cartodb,codeandtheory/cartodb,splashblot/dronedb,nyimbi/cartodb,DigitalCoder/cartodb,DigitalCoder/cartodb