Find a component doesn't work in https with Firefox

[Flaburgan]

Since Firefox 23, the mixed content (aka http request in an https page) are blocked, so when you open the game at https://emils.github.io/2048-multiplayer/ the request to http://2048.stolarsky.com:3000/game/players is blocked.

This can easily fixed by allowing http://2048.stolarsky.com:3000/game/players to be acceded in https.