Diverse Code Cleanups

*Code wurde PEP-8 gerecht formatiert
* Kleine Fehler die der PyCharm Inspector beanstandet wurden korrigiert

membership/management/commands/get-user.py

@@ -8,10 +8,10 @@ It might help your debugging to know or you might want to contact the user to
 tell them you have fixed the problem.
 """
 
-from django.contrib.auth.models import User
+from django.conf import settings
+from django.contrib import auth
 from django.contrib.sessions.models import Session
-from django.core.management.base import BaseCommand, CommandError
-from django.utils.translation import ugettext_lazy as _
+from django.core.management.base import BaseCommand
 from optparse import make_option
 
 
@@ -19,33 +19,36 @@ class Command(BaseCommand):
     args = '<session_key session_key ...>'
     help = 'If the session still exists find it and show the related User'
     option_list = BaseCommand.option_list + (
-        make_option('--delete',
+        make_option(
+            '--delete',
             action='store_true',
             dest='delete',
             default=False,
-            help='Delete the Useraccount'),
-        make_option('--ban',
+            help='Delete the Useraccount'
+        ),
+        make_option(
+            '--ban',
             action='store_true',
             dest='ban',
             default=False,
-            help='Ban the Useraccount'),
-        )
-
+            help='Ban the Useraccount'
+        ),
+    )
 
     def handle(self, *args, **options):
         for session_key in args:
             try:
                 session = Session.objects.get(session_key=session_key)
                 uid = session.get_decoded().get('_auth_user_id')
-                user = User.objects.get(pk=uid)
+                user = auth.get_user_model().objects.get(pk=uid)
             except Session.DoesNotExist:
                 self.stderr.write('Session "%s" does not exist' % session_key)
                 continue
-            except User.DoesNotExist:
+            except settings.AUTH_USER_MODEL.DoesNotExist:
                 self.stderr.write('Session "%s" has no registed User' % session_key)
                 continue
             if options['delete']:
-                self.stdout.write('deleting %s'% user.username)
+                self.stdout.write('deleting %s' % user.username)
                 user.delete()
             elif options['ban']:
                 self.stdout.write('banning %s' % user.username)