Ticket #2953: bugfix for most parts of the ticket

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23559 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
fast simple integrals (for web project etc)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23560 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e