-Finish rules translation in Spanish + improve existing ones
-Design: final touch (gain extra space on top, using space on the right)
-Crazyhouse: center reserves, grey if zero available, numbers superimposed
-Promotions: increase pieces sizes, better background.
-Code: use two spaces instead of tabs, everywhere.
+styling: connection indicator, names, put movesList + chat in better positions
+complete translations, stylesheets, variants rules ...