Make home image optional

Author: m-hofmann

layouts/partials/header.html

@@ -1,5 +1,6 @@
 <header class="container mt-sm-5 mt-4 mb-4 mt-xs-1">
     <div class="row">
+        {{ if isset .Site.Params "home_image" }}
         <div class="col-sm-4 col-12 text-sm-right text-center pt-sm-4">
             <a href="/" class="text-decoration-none">
                 <img id="home-image" class="rounded-circle"
@@ -15,6 +16,7 @@
                 />
             </a>
         </div>
+        {{ end }}
         <div class="col-sm-8 col-12 text-sm-left text-center">
             <h2 class="m-0 mb-2 mt-4">
                 <a href="/" class="text-decoration-none">