Added hooks and filters to allow our new search index purge plugin to work. You’re encouraged to read this post about an attachment URL problem for more info.
Fixes a bug where the determination of “Orphaned content” tries to account for noindex items, resulting in a lot of additional database querying.
Bugfixes: * Fixes a bug where the auto-generating of the slug did not work as expected due to persisting of the post name too agressively.
