Prevent twitter logo from overlapping Crafaatar title on mobile

lib/views/layout.jade

@@ -27,6 +27,5 @@ html(lang="en")
         .container
           .navbar-header
             a.navbar-brand(href="/") Crafatar
-          .navbar-header
             a.navbar-brand.twitter(href="https://twitter.com/Crafatar", target="_blank") crafatar
     block content