Improve Tutorial flow to allow swipe left and swipe right gestures

[margelle]

Describe the bug
The tutorial flow does not allow you to go back one page by swiping left
The tutorial flow does not allow you to go forward one page by swiping right

To Reproduce
Steps to reproduce the behavior:

1. Go to Paramètres
2. Click on Tutoriel
3. Click Suivant
4. Try to swipe right to advance one page or try to swipe left to go back one page
5. Note that the page did not change

Expected behavior
Swiping left takes backward one page
Swiping right goes forward one page

Additional context
The progress bar at the bottom could be a different way to allow going backwards in the tutorial if it was interactive