message: Update QuadratureSpace with a GetOrder
diff: @@ -756,6 +756,9 @@ public:
  /// Return the total number of quadrature points.
  int GetSize() const { return size; }
  + /// Return the order used by the global rules from #IntRules.
  + int GetOrder() const { return order; }
  +
  /// Returns the mesh
  inline Mesh *GetMesh() const { return mesh; }
  