Install polymorphic in prod

cntmanage/cntmanage/settings_prod.py

@@ -47,6 +47,7 @@ INSTALLED_APPS = [
     'colorfield',
     'import_export',
     'django_admin_action_forms',
+    'polymorphic'
 ]
 
 # Import Export plugin settings
@@ -56,7 +57,7 @@ IMPORT_EXPORT_SKIP_ADMIN_LOG = True
 IMPORT_FORMATS = [CSV]
 
 MIDDLEWARE = [
-    'flightslot.middleware.RedirectNonSuperuserFromAdminMiddleware',
+    'flightslot.middleware.RedirectNonSuperuserFromAdminMiddleware', # custom middleware to show "user" page to non superuser
     'django.middleware.security.SecurityMiddleware',
     'whitenoise.middleware.WhiteNoiseMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',