Corrigendum: The time limit for receipt of tenders has been extended! The new deadline for submission of tenders is 26.08.2013. The opening for tenders has been changed accordingly and will take place on 02.09.2013 at 14:00. No other changes to the tender specifications were made. The corrigendum has been submitted and will become visible and downloadable once the corrigendum notice is published on TED. Then, the revised dates will also be indicated in the milestones section.