OO-2648: path to the attachments of an assessmentItem are relative to it and not the storage folder (imsmanifest.xml) created by the question pool

OO-2626: change behavior of cache, add a lot of course node indexers, fix issue with Open document indexer, remove cache in search controller, add the filename (without suffix) if not title in meta information found, add a batch of XSD in blacklist...

OO-2623: use the same component as the results report to show the assessment item and not a stringuified version of it