web, 3D properties view : projection tab (start)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33800 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Parametric equation for conics (parabola)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33801 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e