Improve monitoring and data exports#64

We need to be able to filter names of students who have not completed tasks more easily.

Marks exported on Excel should have students names going down vertically, not horizontially.

Thank you very much for your suggestion, Ann! Am I right in saying that you’d like to be able to see, at a glance, which students haven’t done assigned work - possibly across multiple tasks at once? Thank you in advance for the extra info!