cubicweb-dataio #3478483 Refactor CSVRdfReader to fix naming of rows and columns [validation pending]

prioritynormal
typebug
done in0.4.0
load0.100
load left0.000
closed by#a81b674141f0 [interfaces] Refactor CSVRdfReader to fix naming of rows and columns, closes #3478483
patchRefactor CSVRdfReader to fix naming of rows and columns [applied]