Round upper bounds in sum for discrete distributions -- #2906

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23003 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix related to removal of Algos constant in archimedean commands

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23004 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e