Allow 3D applets in Tube on tablet

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37695 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Export(pgf,asymptote): piecewise defined function 

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37696 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e