Add background image.

src/App.html

-<div id="app">
+<div id="app" v-bind:style="style">
   <nav class='container'>
     <div class='item'>
       <a route-to='friends-timeline' href="#">Pleroma FE</a>

src/App.js

@@ -4,5 +4,9 @@ export default {
   name: 'app',
   components: {
     UserPanel
+  },
+  computed: {
+    user () { return this.$store.state.users.currentUser || {} },
+    style () { return { 'background-image': `url(${this.user.background_image})` } }
   }
 }