Adds default big map bkg
Adds default big map bkg

CartoDB/cartodb,CartoDB/cartodb,splashblot/dronedb,nyimbi/cartodb,bloomberg/cartodb,splashblot/dronedb,UCL-ShippingGroup/cartodb-1,thorncp/cartodb,thorncp/cartodb,codeandtheory/cartodb,nyimbi/cartodb,bloomberg/cartodb,thorncp/cartodb,nyimbi/cartodb,UCL-ShippingGroup/cartodb-1,splashblot/dronedb,codeandtheory/cartodb,nyimbi/cartodb,nuxcode/cartodb,UCL-ShippingGroup/cartodb-1,nuxcode/cartodb,bloomberg/cartodb,thorncp/cartodb,nyimbi/cartodb,codeandtheory/cartodb,codeandtheory/cartodb,splashblot/dronedb,nuxcode/cartodb,thorncp/cartodb,splashblot/dronedb,nuxcode/cartodb,codeandtheory/cartodb,CartoDB/cartodb,UCL-ShippingGroup/cartodb-1,bloomberg/cartodb,bloomberg/cartodb,nuxcode/cartodb,UCL-ShippingGroup/cartodb-1,CartoDB/cartodb,CartoDB/cartodb