Add genTimoshenkoProjectProcess() and main() in WFProcessor2D

  - just can run without Exceptions, need further tests
make SymTriangleQuadrature fields numPts and weights package protected
Add constructor for Wendland
Add getDegree() to Segment2DQuadrature and QuadrangleQuadrature
make two fields of Model2D public constants

  - DIM
  - DEFAULT_WHETHER_USE_DISTURB
Fix a bug of ReverseCuthillMcKeeSolver for UpperSPDDense input matrix