Users are not able to follow/unfollow a forum or a thread

Steps Go to the forum of a any user(ex user- TopConnCustomer group - https://vanilla.topcoder-dev.com/group/128)

Actual result There is no option to follow/unfollow a forum or a thread

Expected result Users should be able to follow/unfollow a forum or a thread

Final Submission Guidelines

Git issue link: https://github.com/topcoder-platform/forums/issues/91