-Set problems style (maybe will fix strange flashing bug?)
-global lang cookie, + display (remember in each variant what is shown...)
-translations (how ? switch on index page only, then find ideas...)
-Improve style for various screen sizes
+Nouvelle partie en cours s'affiche pas pour les autres personnes restées dans le Hall
+myGames initial loading: live games aren't shown
+Checkered chess: need another FEN element, last non-capturing checkered move (if applicable)
+ + need to stack these indicators for alpha beta search
+MarseilleChess: revise bot and test
+Cadences: uniformiser, tout en minutes + secondes (par défaut) ou days [corr, checkbox?]
+Translations (including About page), refresh rules