In certain edge cases, the message bus won't send the message to the
user about the updated review count and it can go out of sync.
This patch synchronizes the review count every time:
1. The user visits the "Needs Review" page
2. Every time the user performs an action
Includes support for flags, reviewable users and queued posts, with REST API
backwards compatibility.
Co-Authored-By: romanrizzi <romanalejandro@gmail.com>
Co-Authored-By: jjaffeux <j.jaffeux@gmail.com>
Robin Ward