Feature: Add a teacher stream or so to give feedback to students

[erikmd]

Related user(s):

@yurug

Related issue(s) or PR(s):

No response

Related project scope(s):

web-app UI, teacher dashboard

The problem:

Currently, the student/teacher communication is one-side.

It is difficult to give feedback to students, except by using an external chat or e-mail app.

Wanted solution:

• Make it possible for teachers to (edit the students' code, or) provide the students with a stream of comments from the teacher, including fragments of the answer, that can be consulted anytime and be marked as read by the student.
• This might look like a pull-request review.
• This stream could be available from the Teacher dashboard (with an assignment log indicating, e.g., which student just clicked on Grade).

Considered alternatives:

No response

Additional context:

No response