Easy spacing fixes, trailing stuff

Remove useless trailing \
Remove trailing spaces
Add missing empty lines

autopep8 -ir -j2 --select=E301,E302,E502,W291,W293,W391 .

Diff quickly checked.

modules/transilien/backend.py

@@ -26,6 +26,7 @@ from weboob.tools.backend import BaseBackend
 from .browser import Transilien
 from .stations import STATIONS
 
+
 class TransilienBackend(BaseBackend, ICapTravel):
     NAME = 'transilien'
     MAINTAINER = u'Julien Hébert'