Improve QuadratureManager's interface

src/analysis/GaussLegendreQuadratureDescriptor.hpp

src/analysis/GaussLobattoQuadratureDescriptor.hpp

src/analysis/GaussQuadratureDescriptor.hpp

src/analysis/QuadratureManager.cpp

src/analysis/QuadratureManager.hpp

src/analysis/QuadratureType.hpp

tests/test_CubeGaussQuadrature.cpp

tests/test_PrismGaussQuadrature.cpp

tests/test_PrismTransformation.cpp

tests/test_PyramidGaussQuadrature.cpp

tests/test_PyramidTransformation.cpp

tests/test_Q1Transformation.cpp

tests/test_SquareGaussQuadrature.cpp

tests/test_TensorialGaussLegendreQuadrature.cpp

tests/test_TensorialGaussLobattoQuadrature.cpp

tests/test_TetrahedronGaussQuadrature.cpp

tests/test_TriangleGaussQuadrature.cpp