Clean code

app/Views/layout.html

@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>{{ @pageTitle ? @pageTitle . ' · ' . @app.name : @app.name }}</title>
-  <meta name="description" content="{{ @app.tagline }}">
+  <meta name="description" content="{{ @metaDescription ?: @app.tagline }}">
   <link rel="icon" href="{{ @BASE }}/assets/favicon.svg" type="image/svg+xml">
   <link rel="stylesheet" href="{{ 'asset', 'file=app.css' | alias }}">
   <script defer src="{{ 'asset', 'file=app.js' | alias }}"></script>