Ticket #3181: copy&paste fixed in the spreadsheet view

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24588 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Taking out obsolete debug messages

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24589 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] fractionalPart & incomplete gammma fixes

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24590 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e