Allow searching for tags without hash character (#449)

* Allow searching for tags without hash character

* Allow removing selected tags without hash

* Add more tests

bookmarks/migrations/0020_userprofile_tag_search.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.7 on 2023-04-10 01:55
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookmarks', '0019_userprofile_enable_favicons'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='userprofile',
+            name='tag_search',
+            field=models.CharField(choices=[('strict', 'Strict'), ('lax', 'Lax')], default='strict', max_length=10),
+        ),
+    ]