Tweak header and improve card design

static/js/core.js

@@ -1,43 +1,4 @@
 
-// Hide Header on on scroll down
-var didScroll;
-var lastScrollTop = 0;
-var delta = 5;
-var navbarHeight = $('nav-bar').outerHeight();
-
-$(window).scroll(function(event){
-    didScroll = true;
-});
-
-setInterval(function() {
-    if (didScroll) {
-        hasScrolled();
-        didScroll = false;
-    }
-}, 250);
-
-function hasScrolled() {
-    var st = $(this).scrollTop();
-    
-    // Make sure they scroll more than delta
-    if(Math.abs(lastScrollTop - st) <= delta)
-        return;
-    
-    // If they scrolled down and are past the navbar, add class .nav-up.
-    // This is necessary so you never see what is "behind" the navbar.
-    if (st > lastScrollTop && st > navbarHeight){
-        // Scroll Down
-        $('nav').addClass('nav-bar-up');
-    } else {
-        // Scroll Up
-        if(st + $(window).height() < $(document).height()) {
-            $('nav').removeClass('nav-bar-up');
-        }
-    }
-    
-    lastScrollTop = st;
-}
-
 function cardPressed() {
     this.classList.add('card-link-wrapper-active');
 }