read a single task

[MattiaSangermano]

As a professor, I want to be able to read al single task, so that I read it

How to demo:
send a GET request to /tasks/{id}

The response should be a json with these attributes:

• id
• exerciseText
• answers[ ]
  • answer
  • isRight
• explantaion
• categoryId[ ]
• total score
• last edit

Effort: 1