[021] Real time alerts - Xenforo 2 2.0.0

Sends a notification about a new alert to the receiver. Provides display of alerts in real time.

Overview

• Provides real-time messaging in threads.
• Provides real-time display of reactions.
• Provides real-time content updates when editing a post.
• Provides deletion of posts / update of their content when their status changes in real time.
• Adds an "Activity" block to the bottom of the post list that displays users who are typing a message in a thread.