Task #1902306
Purpose
=======
The "page" concept is now only present in the user interface.
Surveys are split in "sections" that have two purposes:
- Organizing a (long) survey/certification
- Allow to pick a random questions count for that section (more information here after)
On the user interface, based on the questions_layout field, surveys are displayed:
- On a single page, where sections still appear but are only used as visual separations
- On multiple pages, having one page per section (this matches the previous behavior)
- On multiple pages, having one page per *question*
On top of that page concept, this commit added randomization for the survey questions.
The randomization mechanism will take X questions per section of the survey.
The survey.user_input is initialized with the selected questions to be sure to keep that
set of questions and avoid showing a new set of questions every time the user refreshes the page.
This also allows to easilly go back and know which question we have to show.
Aurélien Warnon
445541989f