Make Internet Archive integration opt-in (#250)

* Make web archive integration opt-in

* Add toast message about web archive integration opt-in

* Improve wording for web archive setting

* Add toast admin

* Fix toast clear button visited styles

* Add test for redirect

* Improve wording

* Ensure redirects to same domain

* Improve wording

* Fix snapshot test

Co-authored-by: Sascha Ißbrücker <sascha.issbruecker@gmail.com>

bookmarks/migrations/0012_toast.py

@@ -0,0 +1,26 @@
+# Generated by Django 3.2.6 on 2022-01-08 19:24
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('bookmarks', '0011_userprofile_web_archive_integration'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Toast',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('key', models.CharField(max_length=50)),
+                ('message', models.TextField()),
+                ('acknowledged', models.BooleanField(default=False)),
+                ('owner', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]