fix: Display unblock feature only for blocking user

Created by: Tirokk

Authored by mattwr18 Feb 10, 2020 Merged Feb 10, 2020

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• add isBlocked query to check if userA initiated the blocking and, if true, only display link in content menu and button to unblock.
• userB should not have an indication they have been blocked, or a button/link that tries to remove a relationship that originated from userA.
• add cypress tests to make sure we don't break this in the future.

🍰 Pullrequest

Issues

• fixes #3033 (closed)