fix font awesome config path

No idea how this has been working all this time…

Author: imlucas

styles/index.less

@@ -7,6 +7,8 @@
 // @import "./variables.less";
 @octicons-font-path: "fonts";
 
+@fa-font-path: "fonts";
+
 // Tweaks to bootstrap
 @import "./10strap.less";
 @import "./grid-xl.less";