Fix for #4381

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34759 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
4.9.280.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34760 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] ifdef changed for macos in help.cc

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34761 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Changing giac.js to the latest version in web/kickstart.xml

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34762 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Area with list of 3D points

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34764 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e