make sure --export works with 3D View

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36935 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
make sure --export works with 3D View

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36936 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
compile error

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36937 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e