Implement alert fallback

packages/notification/src/index.js

 import './vpu-notification';
-import { send } from './notification';
+import { send } from 'vpu-common/notification';
 
 export { send };

packages/notification/src/notification.js

-/**
- * Sends a notification via the event
- *
- * example options:
- *
- * {
- *   "summary": "Item deleted",
- *    "body": "Item foo was deleted!",
- *    "type": "info",
- *    "timeout": 5,
- * }
- *
- * @param options
- */
-function send(options) {
-    const event = new CustomEvent("vpu-notification-send", {
-        bubbles: true,
-        cancelable: true,
-        detail: options,
-    });
-
-    window.dispatchEvent(event);
-}
-
-export { send };

packages/notification/src/vpu-notification-demo.js

 import {i18n} from './i18n';
-import {send as notify} from './notification';
+import {send as notify} from 'vpu-common/notification';
 import {html, LitElement} from 'lit-element';
 import './vpu-notification';
 import commonUtils from 'vpu-common/utils';

packages/notification/src/vpu-notification.js

@@ -56,6 +56,9 @@ class VPUNotification extends VPULitElement {
                     that.removeMessageId(messageId);
                 }, timeout * 1000);
             }
+
+            // mark the event as handled
+            e.preventDefault();
         });
 
         this.updateComplete.then(()=>{

common @ 3623e0d1

-Subproject commit 68e0a4f1f1a3ef6e05aca5216bf8684578ec2229
+Subproject commit 3623e0d1d062c1048ee37ac779d9425b56ffe26b