Fix tests

src/App.js

@@ -10,6 +10,7 @@ import {ApolloClient} from 'apollo-client';
 import {HttpLink} from 'apollo-link-http';
 import {InMemoryCache} from 'apollo-cache-inmemory';
 import {ApolloProvider} from "react-apollo";
+import 'isomorphic-fetch';
 
 import Dusken from "./Dusken";
 import duskenApp from "./reducers";