revert changes in_header.html, because it's in another pr
revert changes in_header.html, because it's in another pr

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