Forums tab must be displayed for all roles like copilot approver etc

Forums tab must be displayed for all roles like copilot approver etc example: https://www.topcoder.com/challenges/30133520 https://beta-community-app.topcoder.com/challenges/0c8061f0-076f-47d3-a901-7cf13f99500c user: picachui (copilot and appprover for the contest) <img width="1440" alt="Screenshot 2020-07-22 at 12 50 07 PM" src="https://user-images.githubusercontent.com/58783823/88146989-3c3bf600-cc1a-11ea-9b3d-8cb4441277d0.png">

Final Submission Guidelines

Git issue link: https://github.com/topcoder-platform/community-app/issues/4672