Reverting all giac changes until r33437 (r33437 is kept) + adding fix for #4290 (temporary change for 4.4.30.0 and 4.9.261.0)


git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33634 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Changing giac.js to the latest version in web/kickstart.xml

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33635 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e