BUG: always write out DDF as THE scalar data for a fiber bundleOther scalar-value-per-point data gets written as FieldData.
Merge pull request #35 from Chaircrusher/FixVTKPolyDataWriter

BUG: always write out DDF as THE scalar data for a fiber bundleOther sca...
Changed acknowledgments, contributors and some default settings in the XML

Added grant numbers to acknowledgements, added some names to contributors list, and changed some default settings in the UI as suggested by Ron.