Draw 3D quadric as single point

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31516 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Remove unused method

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31517 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
4.9.242.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31518 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix for #4031 + javadoc

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31519 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix for #4048

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31520 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Comment

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31521 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e