Change the checks data model and simplify the code to fit it. No change
to the GUI.
UNSTABLE : New strategy for punches and dynamic information page with
notification for unread news
Adds number of unread messages for the information page
Adds number of unread messages for the information page
Ajout de macaron de nombre de nouveautés
Merge branch 'db_refactor' of https://github.com/10MOhm/puncher into db_refactor