Remove jQuery from hashchange.js

It doesn't work under Fastboot

Author: kzys

app/initializers/hashchange.js

@@ -1,5 +1,3 @@
-import $ from 'jquery';
-
 function decodeFragmentValue(hash) {
     try {
         return decodeURIComponent(hash.slice(1));
@@ -29,11 +27,17 @@ function hashchange() {
 }
 
 export function initialize() {
-    $(window).on('hashchange', hashchange);
+    if (typeof window.addEventListener === 'undefined') {
+        return; // Fastboot
+    }
+    window.addEventListener('hashchange', hashchange);
 
     // If clicking on a link to the same fragment as currently in the address bar,
     // hashchange won't be fired, so we need to manually trigger rescroll.
-    $(document).on('a[href]', 'click', function(event) {
+    document.addEventListener('click', function(event) {
+        if (event.target.tagName !== 'A') {
+            return;
+        }
         if (this.href === location.href && location.hash.length > 1) {
             setTimeout(function() {
                 if (!event.defaultPrevented) {