Add spacer layout element.

src/containers/App.js

@@ -28,14 +28,18 @@ import {pageStore, siteStore} from '../stores';
 export class App extends Component {
   render() {
     const pageTitle = `${pageStore.title} - ${siteStore.name}`;
+    const appStyle = {
+      display: 'flex',
+      flexDirection: 'row',
+      justifyContent: 'center',
+    };
 
-    // TODO: Figure out the favicon issue with Helmet not rendering content.
     return (
-      <div style={{display: 'flex', flexDirection: 'row', justifyContent: 'center'}}>
+      <div style={ appStyle }>
         <Helmet
           title={ pageTitle }
           link={ [
-            {rel: 'icon', type: 'image/icon', href: 'this.props.site.favicon'}
+            {rel: 'icon', type: 'image/icon', href: siteStore.config.favicon}
           ] } />
 
         <ControlPanel />

src/layout.js

@@ -12,6 +12,6 @@ import {h, render, Component} from 'preact';  /** @jsx h*/
 
 export class Spacer extends Component {
   render() {
-    return (<span>&nbsp;</span>>);
+    return (<span>&nbsp;</span>);
   }
 }