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/boursorama/pages/__init__.py

@@ -23,6 +23,7 @@ from .account_history import AccountHistory
 from .accounts_list import AccountsList
 from .login import LoginPage, UpdateInfoPage
 
+
 class AccountPrelevement(AccountsList):
     pass