Add manifest.json, icons and install button, flatten client/src

client/js/modules/storage.js

@@ -0,0 +1,18 @@
+import Cookie from 'js-cookie';
+import debounce from 'lodash/debounce';
+import { getSelectedTab } from 'state/tab';
+import { isChannel, stringifyTab } from 'utils';
+import { observe } from 'utils/observe';
+
+const saveTab = debounce(
+  tab => Cookie.set('tab', stringifyTab(tab), { expires: 30 }),
+  1000
+);
+
+export default function storage({ store }) {
+  observe(store, getSelectedTab, tab => {
+    if (isChannel(tab) || (tab.server && !tab.name)) {
+      saveTab(tab);
+    }
+  });
+}