REST API: Replicator getFilesList

Change-Id: I6f1c2fbf9bffd295efc377aad69c9211da453fb0
Reviewed-on: http://naan.mimuw.edu.pl:8001/112
Tested-by: Nebulostore Nebulostore <nebulostore@gmail.com>
Reviewed-by: Bolek Kulbabinski <bkulbabinski@gmail.com>