#4655: Undo for pure 3D modes

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37031 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4635 title labels and buttons in footer.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37032 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e