Make it so that after a thread has been closed users can still "try to assign antipoints to themselves" ie. view the assignments on that post of their own.

This second one should actually be in the "Oops! A bug!" forum, but when viewing the assignment, "contact user about this assignment" isn't greyed out if the user has already been contacted from the AP Center. This however doesn't allow abusing because it then just says that it was unable to send the request.