Finished uploads still grouped by file

Seems that the lists are still grouped by file. This grouping makes some sense with the downloads, but not with uploads. The rare occurance where user downloads a file with same name can probably be fixed by removing the findFile-call for downloads (since as far as I can tell it's redundant anyway and only leads to incorrect behavior described previously. Removing the call of course fixes this only if the core does something sensible and doesn't clump the download together with the previous one.).

But for uploads I really think the grouping should be by user and file. So that each user downloading file would be added to the list separately and not like now that all the users are clumped to one single row. With segmented downloading file/user row would be updated when segment completes. If this is at all possible with current core without extreme performace penalties, is a another question.