Fix generation of index for private galleries

Herisson/index.html.j2

@@ -22,16 +22,16 @@
                 <h2>Albums</h2>
                 <div class="galleries">
                     {% for gallery in galleries -%}
-                        <div class="gallery-cover">
-                            {% if not gallery.private %}
+                        {% if not gallery.private %}
+                            <div class="gallery-cover">
                                 <a href="{{ gallery.url }}">
                                     <img src="{{ gallery.cover_photo.thumb_url }}" alt="" />
                                     <span class="gallery-cover-name">
                                         {{ gallery.name }}
                                     </span>
                                 </a>
-                            {% endif %}
-                        </div>
+                            </div>
+                        {% endif %}
                     {% endfor %}
                 </div>
             </div>