[Fix#18] Add Toggle button to hide instructor feedback

[Samvae]

Fix #18

Created a toggle button for short answer questions that shows/hides the instructor's feedback. The toggle feedback button will only appear if there is a comment.

Image of toggle button when there is a comment:

Image of short answer question when there is no comment:

Things to Add / Suggestions:

• Implement a mechanism to record if a student has viewed feedback. This can be achieved by tracking whether they have clicked the toggle button.
• Consider separating user feedback and instructor feedback into distinct sections for clarity and organization.
• Remove extra comments and scores for short answer questions to prioritize user privacy.
  

These changes aim to enhance the user experience, protect privacy, and improve the overall organization of feedback sections.