pep8 blank lines fixes

flake8 --select W391,E302,E301,E304

autopep8 can't fix W391 even though it claims it can.
Fixed using a simple custom script.

modules/btdigg/pages/torrents.py

@@ -50,6 +50,7 @@ class TorrentsPage(Page):
             torrent.date = date
             yield torrent
 
+
 class TorrentPage(Page):
     def get_torrent(self, id):
         trs = self.document.getroot().cssselect('table.torrent_info_tbl tr')