minor cleanup

cookbook/views/views.py

@@ -12,6 +12,7 @@ from django.contrib.auth.models import Group
 from django.contrib.auth.password_validation import validate_password
 from django.core.exceptions import ValidationError
 from django.db.models import Avg, Q, Sum
+from django.db.models.functions import Lower
 from django.http import HttpResponseRedirect, JsonResponse
 from django.shortcuts import get_object_or_404, redirect, render
 from django.urls import reverse, reverse_lazy