removed legacy version of ACP menu code

public/src/admin.js

@@ -24,30 +24,7 @@ var admin = {};
 	};
 
 	$(function() {
-		var menuEl = $('.sidebar-nav'),
-			liEls = menuEl.find('li'),
-			parentEl,
-			activate = function(li) {
-				liEls.removeClass('active');
-				li.addClass('active');
-			};
-
-		// also on ready, check the pathname, maybe it was a page refresh and no item was clicked
-		liEls.each(function(i, li){
-			li = $(li);
-			if ((li.find('a').attr('href') || '').indexOf(location.pathname) >= 0) {
-				activate(li);
-			}
-		});
-
-		// On menu click, change "active" state
-		menuEl.on('click', function(e) {
-			parentEl = $(e.target).parent();
-			if (parentEl.is('li')) {
-				activate(parentEl);
-			}
-		});
-
+		setupMenu();
 		setupKeybindings();
 	});
 
@@ -64,7 +41,29 @@ var admin = {};
 
 		// move this to admin.config
 		app.config = config;
-	});	
+	});
+
+	function setupMenu() {
+		var listElements = $('.sidebar-nav li');
+
+		listElements.on('click', function() {
+			var $this = $(this);
+
+			if ($this.hasClass('nav-header')) {
+				$this.parents('.sidebar-nav').toggleClass('open');
+				setTimeout(function() {
+					$('.nano').nanoScroller();
+				}, 500); // replace with animationend event
+			} else {
+				listElements.removeClass('active');
+				$this.addClass('active');
+			}
+		});
+
+		$('.nano').nanoScroller();
+
+		$('#main-menu .nav-list > li a').append('<span class="pull-right"><i class="fa fa-inverse fa-arrow-circle-right"></i>&nbsp;</span>');
+	}
 
 	function setupKeybindings() {
 		Mousetrap.bind('ctrl+shift+a r', function() {