[importer] Return self in Json2Csv#run if complex data (do nothing)
[importer] Return self in Json2Csv#run if complex data (do nothing)

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