Transform old notification payload shape into new shape

Will eventually have to refactor, but this makes it backwards
compatible for now

ui/src/shared/actions/notifications.js

@@ -1,9 +1,20 @@
-export function publishNotification(notification) {
+export function publishNotification(
+  type,
+  message,
+  duration = 4000,
+  icon = 'zap'
+) {
+  // TODO: Refactor where notifications are published from and use correct shape
+  // This acts as a temporary means to transform the old shape into the new one
+  const notification = {
+    type,
+    message,
+    duration,
+    icon,
+  }
   return {
     type: 'PUBLISH_NOTIFICATION',
-    payload: {
-      notification,
-    },
+    payload: {notification},
   }
 }