REFAC: KeyPressEvent renamed to KeyEvent, TetrahedralMeshRenderDelegate topology change fix, plane to surface mesh function added to geometry utility

prevent reserve from shrinking the the capacity

also adds unit tests for most of the DataArray and VecDataArray functionality
TBD: squeeze does not work as intended needs review

Fix bug in debugtriangleRenderdelegate where the data was not marked as 'unmodified' after an update

ENH/BUG: VisualObjectImporter uses Geometry transforms now, debug camera now uses scene bounding box for initialization, SDF haptics example, LevelSet cutting example updated with haptics, external data added, VRPN uncommented but still not functional

ENH: ModuleDrivers, Modules added. Geometry transforms. Multi viewer support. LevelSetModel, LevelSetCH, EventObject, DataArray, Controller, VisualObjectImporter improvements/changes

Fix missing material in the same example
Arrange objects so they are all visible