Linkify further image and add caption

templates/shortcodes/further.html

@@ -5,9 +5,14 @@
       <div class="column is-one-third">
         <div class="card">
           <div class="card-image">
-            <figure class="image is-4by3">
-              <img src="{{further.image.url}}" alt="{{further.image.alt}}" />
-            </figure>
+            <a href="{{ get_url(path=further.link)}}">
+              <figure class="image is-4by3">
+                <img src="{{further.image.url}}" alt="{{further.image.alt}}" />
+                {% if further.image.credits %}
+                  <figcaption>{{ further.image.credits }}</figcaption>
+                {% endif %}
+              </figure>
+            </a>
           </div>
           <div class="card-content">
           <p class="title"><a href="{{get_url(path=further.link)}}">{{further.title}}</a></p>