Readded messages middleware, it is required for admin site

neboard/settings.py

@@ -113,6 +113,7 b' MIDDLEWARE_CLASSES = ['
     'django.middleware.locale.LocaleMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
     'boards.middlewares.BanMiddleware',
     'boards.middlewares.TimezoneMiddleware',
 ]
@@ -131,6 +132,7 b' INSTALLED_APPS = ('
     'django.contrib.admin',
     # Uncomment the next line to enable admin documentation:
     # 'django.contrib.admindocs',
+    'django.contrib.messages',
 
     'debug_toolbar',