Allow moderators to see all events on the /user_events page. Before only
admins could see when a user changed their email, changed their
password, or had a failed login attempt. Now moderators can see these
events too.
Filtering these events out made the /user_actions page slower, and it
wasn't really necessary since merely knowing that a user changed their
email or password isn't that much more sensitive than knowing when they
logged in or out.
