append tab hash to url

opentech/static_src/src/javascript/components/tabs.js

@@ -43,11 +43,10 @@ class Tabs {
 
     tabs(e) {
         // Find current tab
-        this.stripTabClasses();
-
         const tab = e.currentTarget;
-
+        this.stripTabClasses();
         this.addTabClasses(tab);
+        this.updateUrl(tab);
     }
 
     stripTabClasses(){
@@ -67,6 +66,10 @@ class Tabs {
         tab.classList.add(this.tabActiveClass);
         document.querySelector(`#${tabId}`).classList.add(this.tabContentActiveClass);
     }
+
+    updateUrl(tab){
+        window.location.hash = tab.getAttribute('href');
+    }
 }
 
 export default Tabs;