Fix #2021 : Share ratio limit not obeyed for torrents downloaded outside deluge

Share ratio limit is based upon torrent.is_finished and a seeded torrent added
to the session was not set after checking.

deluge/core/torrentmanager.py

@@ -933,9 +933,9 @@ class TorrentManager(component.Component):
                 if torrent.options["download_location"] != move_path:
                     torrent.move_storage(move_path)
 
-            torrent.is_finished = True
             component.get("EventManager").emit(TorrentFinishedEvent(torrent_id))
 
+        torrent.is_finished = True
         torrent.update_state()
 
         # Only save resume data if it was actually downloaded something. Helps