Persist token in localStorage

Closes #127


Former-commit-id: 18496edc

fda-ui/nuxt.config.js

@@ -55,7 +55,8 @@ export default {
   plugins: [
     { src: '~/plugins/toast', ssr: false },
     { src: '~/plugins/vendors', ssr: false },
-    { src: '~/plugins/axios' }
+    { src: '~/plugins/axios' },
+    { src: '~/plugins/vuex-persist.js', mode: 'client' }
   ],
 
   // Auto import components (https://go.nuxtjs.dev/config-components)

fda-ui/plugins/vuex-persist.js

+import VuexPersistence from 'vuex-persist'
+
+export default ({ store }) => {
+  new VuexPersistence({
+    storage: window.localStorage,
+    reducer: state => ({
+      token: state.token,
+      user: state.user
+    })
+  }).plugin(store)
+}