Check twitter datasource of current_user instead of user, who can be nil, closes 3878
Check twitter datasource of current_user instead of user, who can be nil, closes 3878

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