Add styleSwitcher.

src/App.js

@@ -1,13 +1,15 @@
 import UserPanel from './components/user_panel/user_panel.vue'
 import NavPanel from './components/nav_panel/nav_panel.vue'
 import Notifications from './components/notifications/notifications.vue'
+import StyleSwitcher from './components/style_switcher/style_switcher.vue'
 
 export default {
   name: 'app',
   components: {
     UserPanel,
     NavPanel,
-    Notifications
+    Notifications,
+    StyleSwitcher
   },
   computed: {
     currentUser () { return this.$store.state.users.currentUser },