Improved name shown for uploaded collections.

* Instead of 'Upload 130722101112', the date part is now beautified by
  nicedate().
* Use the complete year instead of omitting the century.


git-svn-id: http://svn.montala.net/svn/resourcespace@4654 c08608d7-6e46-0410-86ca-f2a6f1370df5