Check required fields on CSV-File-Controlled-Field-Assessor documentation.

[chicoreus]

The wiki documentation https://github.com/kurator-org/kurator-validation/wiki/CSV-File-Controlled-Field-Assessor claims that the geographic heirarchy fields (continent, country, etc.) are required in the input file, but it does not claim to assess them. May be a copy/paste error in the documentation.