minor code cleanups

Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>

offlineimap/accounts.py

@@ -1,4 +1,4 @@
-# Copyright (C) 2003-2015 John Goerzen & contributors
+# Copyright (C) 2003-2016 John Goerzen & contributors
 #
 #    This program is free software; you can redistribute it and/or modify
 #    it under the terms of the GNU General Public License as published by
@@ -20,6 +20,7 @@ import os
 import time
 from sys import exc_info
 import traceback
+import six
 
 from offlineimap import mbnames, CustomConfig, OfflineImapError
 from offlineimap import globals
@@ -27,8 +28,6 @@ from offlineimap.repository import Repository
 from offlineimap.ui import getglobalui
 from offlineimap.threadutil import InstanceLimitedThread
 
-import six
-
 FOLDER_NAMESPACE = 'LIMITED_FOLDER_'
 
 try: