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/wordreference/browser.py

@@ -35,7 +35,7 @@ class WordReferenceBrowser(BaseBrowser):
     PAGES = {
         'https?://www\.wordreference\.com/.*/.*': TranslatePage
         }
-    
+
     def __init__(self, *args, **kwargs):
         BaseBrowser.__init__(self, *args, **kwargs)