Check out notification about editing comment to author, with checked 'Auto-subscribe'

Pre-Conditions:

1. User1 and User2 are registered and logged in
2. At least one branch is created
3. At least one topic is created by User1
4. User1 has checked "Auto subscribe" checkbox in the profile
5. User1 has permissions CREATE_POSTS, VIEW_POSTS
6. User2 has permissions VIEW_POSTS, CREATE_POSTS, EDIT_OTHERS_POSTS