Section Progress

When a student clicks the Section Progress link:
- They see a table listing every activity in the section that has completion tracking enabled.
- A green checkmark shows which items they have completed; an empty box shows what remains.

When a teacher (or manager) clicks the same link:
- They see the same grid layout as Moodle's built-in **Activity Completion** report, but filtered to the current section only.
- Each row is a student; each column is an activity.
- A group selector dropdown lets the teacher filter by group (when the course uses separate groups).