[WIP] A novel page starting/summarizing exam marking

[arnobl]

Work in progress: do not merge yet

The idea is to provide users with a summary page related to the marking of a given exam.
When clicking on 'corriger copies', instead of showing the first question of the first student, the following page appears:

Then, users can resume their marking task by clicking on the buttons 'continuer' that goes the the unrated answer of the given question.

This is an attempt to fix #8

Current issues:
#26 : problem while navigating to question 2.

#27: this would permit users to identify unrated answers to go to them. But currently accessing an answer automatically marks it as rated.

Other issue: StudentResponseService does not permit to get all the answers of a given exam or a given question (requires sheetid). Maybe we can design a dedicated REST route for grabbing a DTO that contains all the data used in the page instead of using several REST routes (that makes the code more complex).

TODO:

• UI tests
• Use tabs. A second tab would contain a table sorted by students instead of questions?

[barais]

API is now ok.

And the StudentResponse is not set when you just navigate through the student responses without any actions

[arnobl]

Closing as deprecated. Opening a new one.