Fix(challenges): reset challenge should update main iframe

common/app/routes/challenges/redux/reset-challenge-saga.js

@@ -1,15 +1,22 @@
+import { Observable } from 'rx';
 import types from './types';
-import { updateCurrentChallenge } from './actions';
+import {
+  updateCurrentChallenge,
+  updateMain
+} from './actions';
 
 export default function resetChallengeSaga(actions$, getState) {
   return actions$
     .filter(({ type }) => type === types.resetChallenge)
-    .map(() => {
+    .flatMap(() => {
       const {
         challengesApp: { challenge: dashedName },
         entities: { challenge: challengeMap }
       } = getState();
       const currentChallenge = challengeMap[dashedName];
-      return updateCurrentChallenge(currentChallenge);
+      return Observable.of(
+        updateCurrentChallenge(currentChallenge),
+        updateMain()
+      );
     });
 }