OpenXML Filter: XLSX: exclude columns for translation

Depends on the resolution of issue #1060 (closed).

This should be available (need to check that it is working as expected for any sheet number):

    // Configure an exclusion
    params.setTranslateExcelExcludeColumns(true);
    params.tsExcelExcludedColumns = new TreeSet<String>();
    params.tsExcelExcludedColumns.add("1A");

where "1A" consists of:

    "1" is a sheet number
    "A" is a column name

This has to be aligned with the following consolidated configurations:

worksheetConfigurations.number.i=1
worksheetConfigurations.0.namePattern=My workheet name
worksheetConfigurations.0.excludedColumns=B,C

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