Allowed creation of site-wide banners via the admin interface.

Fixes #1550.

A banner requires a title, and optionally HTML body and CTA label/URL.
A banner can be active or inactive, and only one can be active at a time.

Banners can be previewed from the admin via the "View on site" options
on a Banner's detail page.

This initial implementation is intentionally minimal to provide a robust
but flexible MVP, with the goal to gather feedback for future iterations.

Future improvements could include:

- Active since and until dates.
- Flexible CTA URL handling, such as URL names or local URLs.

Thanks to Sarahs for the reviews.

1 files changed, 2 insertions, 2 deletions

diff --git a/aggregator/tests.py b/aggregator/tests.py
index afe67b0c..f5716c58 100644
--- a/aggregator/tests.py
+++ b/aggregator/tests.py
@@ -92,7 +92,7 @@ class AggregatorTests(TestCase):
     def test_community_index_number_of_queries(self):
         """Intended to prevent an n+1 issue on the community index view"""
         url = reverse("community-index")
-        with self.assertNumQueries(8):
+        with self.assertNumQueries(9):
             self.client.get(url)
 
     def test_empty_feed_type_not_rendered(self):
@@ -119,7 +119,7 @@ class AggregatorTests(TestCase):
         url = reverse(
             "community-feed-list", kwargs={"feed_type_slug": self.feed_type.slug}
         )
-        with self.assertNumQueries(8):
+        with self.assertNumQueries(9):
             self.client.get(url)
 
     def test_management_command_sends_no_email_with_no_pending_feeds(self):