Add a max_block_size and a DEFAULT_MAX_BLOCK_SIZE
Add a max_block_size and a DEFAULT_MAX_BLOCK_SIZE

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