Add Youtube videos to the map (#13592)

common/app/redux/index.js

@@ -1,10 +1,12 @@
 import fetchUserSaga from './fetch-user-saga';
 import loadCurrentChallengeSaga from './load-current-challenge-saga';
+import fetchYoutubeSaga from './fetch-youtube-saga';
 
 export { default as reducer } from './reducer';
 export * as actions from './actions';
 export { default as types } from './types';
 export const sagas = [
   fetchUserSaga,
-  loadCurrentChallengeSaga
+  loadCurrentChallengeSaga,
+  fetchYoutubeSaga
 ];