Allow saving search preferences (#540)

* Add indicator for modified filters

* Rename shared filter values

* Add update search preferences handler

* Separate search and preferences forms

* Properly initialize bookmark search from get or post

* Add tests for applying search preferences

* Implement saving search preferences

* Remove bookmark search query alias

* Use search preferences as default

* Only show save button for authenticated users

* Only show modified indicator if preferences are modified

* Fix overriding search preferences

* Add missing migration

bookmarks/migrations/0025_userprofile_search_preferences.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.9 on 2023-09-30 10:44
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookmarks', '0024_userprofile_enable_public_sharing'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='userprofile',
+            name='search_preferences',
+            field=models.JSONField(default=dict),
+        ),
+    ]