added tin export to single geometry conversion
put tin export into extra function to avoid code duplication
put tin export into extra function to avoid code duplication
[FileIO/Legacy] Using two spaces instead of tabs.
resolved merge conflicts
corrected TCLAP param output for removeMeshElements-tool
removed surface creation from closed polylines
Merge pull request #492 from rinkk/TINConversionSingleGeometries

TIN conversion for single geometries
[AL] Correct indentation.
[U] Init. impl. of tool for creating BCs from ply.
[FileIO] Impl. BoostXmlGmlInterface::write().

Needed for debugging and utils.
[U] Impl. of writeBCsandGML.
[U] Save each geometry set in own data set.
[U] Merge all geometry sets.
[U] Write BCs and geometry set.