Marked methods as final

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29077 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] fix equation output

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29078 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Removed typecasts

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29079 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@29080 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e