Check subscription about closing/reopening topic when User has checked 'Auto-subscribe' and subscribed to the branch

Pre-Conditions:
1. User1 and User2 are registered and logged in
2. At least one branch is created
3. User2 has checked "Auto subscribe" checkbox in the profile
4. User2 has permission VIEW_TOPICS on an appropriate branch
5. User1 has permissions CREATE_TOPICS, CLOSE_TOPICS, REOPEN_TOPICS on an appropriate branch