CSS: better breakpoint for when to use fixed width for .m-navigation and .m-game-container.
Also hide howto popup on touch.
Card compontent: do nothing on hover on touch devices (had a problem in Firefox on Android where a tap would not select a card but only trigger its onMouseOver callback (green drop shadow) - this fixes it).
!!! as of the last commit the prod build has a JS error when hovering over a card: "TypeError: Qg is undefined". probably some global variable (js/window etc.) used in is-touch-device? is minified and cannot be found anymore.
CSS: can't use rem for media queries.
CSS: removed weird comments.