Unsaved review lost on re-assignation

Use case:

• Reviews are assigned
• Reviewer Alice start to edit review on Ada
• Jury manager re-lauch the review assignation
• Review of Ada is unassigned of Alice ans assigned to Bob
• Alice still have the page open, continu to work on the review
• Alice save the review and get a 403

We have to find a way to prevent such use case.

Idea :

• add a message to jm indicating that it can happen (not enough)
• auto pass a review in status in progress when opening its edit view (too invasive)
• replace the two buttons "Save" and "Saved as finalized" with a big button saying "Mark it as started, prevent re-assignation" (too complexe for the reviewer to understand ?)

added UX critical labels

Other idea:

• When opening edit, if the review is in todo status, prevent the review from being edited until the reviewer clicked on a "I accept the assignation" which will trigger a save and thus defining the review as in progress