This is only used as a subselect, which means that there is no need to order.
The source metatag uses a non-existant function, remove it.
No need to check for deleted posts, it's desired to show deleted thumbnails
on the post flag index for example.
* Add `truthy?` and `falsy?` core extensions to String.
* Use `truthy?` and `falsy?` to replace ad-hoc parsing of boolean
parameters in various places.
* Updated gems
* [inprogress] New pagination helpers used instead of pagination presenters
* [inprogress] Favorites refactored to use ActiveRecord
* [inprogress] PostSets refactored to use a decorator/dependency injection pattern
* [inprogress] Made pool/post interaction more robust
* Pool#posts now returns an ActiveRelation object
* Fixed unit tests
