OO-2968: fill the title and short title independently of the assessment informations, add a fallback solution to the list to show the course title instead an empty title

OO-2935: remove unused link top for the full text search results, fix NPE if the context entry is null (it's the case if the user search for the name of the course element)

OO-2866: check if the test is ended before resuming and some small chaanges to handle the case without NPE