[EN] Direct links to Infinity site and Army

On the old forums we could access Infinity site directly via links at the top of forum's main page. It'd be great to have that option here too, as well as adding direct link to Army. It's one of the most often used links after all.

Bonus points if it could be added on the top bar, next to "Home", "Forums", "Members" buttons, so it would be accessible regardless of where we are on the forums.