Volume: Geometry -> 3D

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30808 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Net for regular-bottom pyramid : augment size

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30809 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
polyhedron undefined >> net undefined

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30810 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e