ensure that table header keeps the focus (maybe taken by table)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37912 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4744 fix draw priority (e.g. slider/polygon)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37913 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e