Merge pull request #142 from johannes-jansson/feature/fix-null-layout

[FIX] Replace layout: none with layout: null in assets

Author: daviddarnes

Diff for: assets/manifest.json

@@ -1,6 +1,6 @@
 ---
 permalink: "manifest.json"
-layout: none
+layout: null
 ---
 {
   "lang": "{{ site.lang | default: "en-US" }}",

Diff for: assets/scripts/sw.js

@@ -1,6 +1,6 @@
 ---
 permalink: "/sw.js"
-layout: none
+layout: null
 ---
 const version = '{{ site.time | date: '%Y%m%d%H%M%S' }}';
 const cacheName = `static::${version}`;