use one Archive instance for state.archive

app/main.js

@@ -16,6 +16,7 @@ import Raven from 'raven-js';
 import './main.css';
 import User from './user';
 import { getTranslator } from './locale';
+import Archive from './archive';
 
 if (navigator.doNotTrack !== '1' && window.RAVEN_CONFIG) {
   Raven.config(window.SENTRY_ID, window.RAVEN_CONFIG).install();
@@ -37,6 +38,7 @@ if (process.env.NODE_ENV === 'production') {
 
   const translate = await getTranslator(LOCALE);
   window.initialState = {
+    archive: new Archive(),
     capabilities,
     translate,
     storage,