MultiParameterDataSet evaluator should use the data type and label of the base definition

For each iteration, the MultiParameterDataSetEvaluator adds columns for each parameter in the iteration.

However, currently it creates a DataSetColumn with name, label, and DataType that are not based on the original parameter name. It would be preferable to use the values from the original parameter name, as this will give users more control over a nice display.

We should leave the name of the column as "parameter.

", but the label and data type should be derived from the data set parameters.