Well this was easy to solve. You have to change the way you load sticky function in global.js to looks like this:
// Sticky Menu
$(window).load(function(){
if ($(window).width() > 800) {
$(".navigation").sticky({ topSpacing: 0 });
}
});
I like the way you use up-to-the-top in your menu. I was able to put it in mine, but how did you make it disappear when you are at the top of the page?