Ticket #4660: at least polyhedra can be copied, if not their vertices

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38090 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4660: polyhedra copy with their vertices as well... no time for cylinders, etc. today

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38091 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e