fixed scroll-zoom bug

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24529 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
missing menu item in StatisticsCalculator

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24530 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e