acp - if bs env < lg + content is long (ex plugins list) then duplicate sidebar menu on header + footer; closes #2510

public/src/admin/admin.js

@@ -39,7 +39,10 @@ var admin = {};
 			var url = data.url;
 
 			selectMenuItem(data.url);
+			setupHeaderMenu();
 		});
+
+		$(window).resize(setupHeaderMenu);
 	});
 
 	socket.emit('admin.config.get', function(err, config) {
@@ -151,4 +154,19 @@ var admin = {};
 		
 		$('#breadcrumbs').html(caret + Array.prototype.slice.call(arguments).join(caret));
 	}
+
+	function setupHeaderMenu() {
+		var env = utils.findBootstrapEnvironment();
+
+		if (env !== 'lg') {
+			if ($('.mobile-header').length || $('#content .col-lg-9').first().height() < 2000) {
+				return;
+			}
+
+			($('#content .col-lg-3').first().clone().addClass('mobile-header'))
+				.insertBefore($('#content .col-lg-9').first());
+		} else {
+			$('.mobile-header').remove();
+		}
+	}
 }());