Start convex polyhedron algorithm

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34390 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
disable command convex

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34391 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Disable command (temporary)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34392 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3392 copy to spreadsheet but it is not working properly yet.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34393 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e