WB Indicators produces strange lines with all Nones

[nikicc]

When loading TM.VAL.MRCH.CD.WT the Data Table on output contains some strange lines containing all None:

All other instances use empty strings for missing data. Also Orange then shows ? in the Data Table to indicate that the value is missing. IMO if this line is not a result of some bug and should even be included in the table it also should use empty strings instead of None.

On a side note this caused some problems with Orange3-Text's GeoMap. While the issue should be fixed there biolab/orange3-text#193 it would still be nice to also resolve this here.

[zidarsk8]

Yes, this does look weird. I'll see what's causing this and fix it this weekend.

Thanks for the report.