-Styles must be improved (full width for smartphones, selectable text for PGN...)
-Tooltip text should fade (even when mouse stay on it, especially for small screens)
-Checkered stage 2: switch button at reserve position (or on top).
-If a played disconnect right after opponent sent a move, it might be never received: secure this
-Mode expert: game.js, button on top (with online indicator)
-Turn indicator on top too (black or white)
+Idée pour bouton settings de même taille que turn indicators :
+dessiner un bouton de taille selon écran, invisible mais toujours là
+--> le prendre comme référence (pour turn indicator)
+==> non, mais 2 tailles a priori (small sur smallscreens: à déterminer)
+modals --> in pug view