Fix SabNZBd folder bug

If only one file is extracted the storage key contains the extracted
file instead of the folder. This leads to CPS skipping the renamer. This
check fixes that.

couchpotato/core/downloaders/sabnzbd/main.py

@@ -6,6 +6,7 @@ from couchpotato.environment import Env
 from datetime import timedelta
 from urllib2 import URLError
 import json
+import os
 import traceback
 
 log = CPLog(__name__)
@@ -117,7 +118,7 @@ class Sabnzbd(Downloader):
                 'status': status,
                 'original_status': nzb['status'],
                 'timeleft': str(timedelta(seconds = 0)),
-                'folder': ss(nzb['storage']),
+                'folder': os.path.dirname(ss(nzb['storage'])) if os.path.isfile(ss(nzb['storage'])) else ss(nzb['storage']),
             })
 
         return release_downloads