extend all polygon wrong orientation test to handle inward facing geometries
fix validation plan not written when validating in stream mode

add more information in global error table

extending visitor and add abstract visitor

Changes the construction of the TreeLists and the renderer handling to
reflect the new model of TransportationObjects.

Changed the export functionality of ZipEntryManager to exporting the
validation reports of validation entries, instead of exporting carbon
copies of the input Zip files' CityGML files.