* 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
