6. Enable Staff Post Deletion

[newmoooon]

User story: As a staff member, I want to be able to delete inappropriate or irrelevant posts, so that the discussion board remains professional and useful for everyone.

Backlog:
Estimated hours/effort for each task: 2 hours
Estimated size/complexity of each task (T shirt): S
Dependencies among tasks (if any): Post ownership and permissions
Initial assignments for team members: Roger
Milestones to indicate which sprint the issue should be completed in (Sprint 1, Sprint 2, Stretch): Stretch
Acceptance criteria that describe how you know this task is done - think about how you will test this feature: 1. Staff can delete any post. 2. Deleted posts no longer appear to students. 3. Deleted content cannot be interacted with.