Improve bookmark form accessibility (#1116)

* Bump Django

* Render error messages in English

* Remove unused USE_L10N option

* Associate errors and help texts with form fields

* Make checkbox inputs clickable

* Change cancel button text

* Fix tests

bookmarks/forms.py

@@ -1,4 +1,5 @@
 from django import forms
+from django.forms.utils import ErrorList
 
 from bookmarks.models import Bookmark, build_tag_string
 from bookmarks.validators import BookmarkURLValidator
@@ -6,6 +7,10 @@ from bookmarks.type_defs import HttpRequest
 from bookmarks.services.bookmarks import create_bookmark, update_bookmark
 
 
+class CustomErrorList(ErrorList):
+    template_name = "shared/error_list.html"
+
+
 class BookmarkForm(forms.ModelForm):
     # Use URLField for URL
     url = forms.CharField(validators=[BookmarkURLValidator()])
@@ -48,7 +53,9 @@ class BookmarkForm(forms.ModelForm):
         if instance is not None and request.method == "GET":
             initial = {"tag_string": build_tag_string(instance.tag_names, " ")}
         data = request.POST if request.method == "POST" else None
-        super().__init__(data, instance=instance, initial=initial)
+        super().__init__(
+            data, instance=instance, initial=initial, error_class=CustomErrorList
+        )
 
     @property
     def is_auto_close(self):