FORUM-709 | [Forum] Incorrect Post counter info

Fix description:
* The post counter is incorrect because the user's profile is not updated when new post is added.
* To fix this problem, we call a process to update user's profile via a statistic listener when a post is created
Merge commit 'fb0228e7cbbfcb718288ba6dc8492be0a4b80f1a' into HEAD