[cas] double cells fix #3241

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27560 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[cas] Numeric does not accumulate

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27561 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e