Merge branch '176-software-spotlights-add-a-back-button' into 'master'

Software spotlights: add a "back" button

Closes #176

See merge request !337

_layouts/spotlight.html

@@ -15,6 +15,7 @@
 
         <section>
             <article>
+            <i class="fas fa-backward"></i> <a href="{% link spotlights.md %}">Back to Software Spotlights Overview</a> <i class="fas fa-backward"></i>
             <div class="alert alert-success spotlight-info">
                 <h3>Centres</h3>
                 {% for center in page.hgf_centers %}
@@ -111,6 +112,9 @@
             </div>
 
                 {{ content }}
+
+            <br><br>
+            <i class="fas fa-backward"></i> <a href="{% link spotlights.md %}">Back to Software Spotlights Overview</a> <i class="fas fa-backward"></i>
             </article>
         </section>
     </main>