nPr fixes

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36752 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4599 model and applied to desktop.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36753 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
add Laplace.3 and InverseLaplace.3

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36755 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e