Revert "Changelog."

This reverts commit 91b7394c9a046ea6f2cf9f5154c4638ec24abc4c.
Revert "Ensure that PD objects are marked as content."

This reverts commit ddfc6edfd2e7d4511a393d28d1ac186b189507dd.
Don't reindex after 'edit_acl' if context has no 'docid'.

E.g., peopledirectory entities aren't really content, and aren't indexed.