Fix duplicate gallery cards (ProjectPythia#434)

Author: brian-rose

portal/_extensions/gallery_generator.py

@@ -123,27 +123,28 @@ def build_from_items(items, filename, title='Gallery', subtitle=None, subtext=No
             modal_str = '\n'.join([m.lstrip() for m in modal_str.split('\n')])
         else:
             modal_str = ''
-            new_card = f"""\
-            :::{{grid-item-card}}
-            :shadow: md
-            :class-footer: card-footer
-            <div class="d-flex gallery-card">
-            <img src="{thumbnail}" class="gallery-thumbnail" />
-            <div class="container">
-            <a href="{item["url"]}" class="text-decoration-none"><h4 class="display-4 p-0">{item["title"]}</h4></a>
-            <p class="card-subtitle">{authors_str}<br/>{affiliations_str}</p>
-            <p class="my-2">{short_description} </p>
-            </div>
-            </div>
-            {modal_str}
 
-            +++
+        new_card = f"""\
+        :::{{grid-item-card}}
+        :shadow: md
+        :class-footer: card-footer
+        <div class="d-flex gallery-card">
+        <img src="{thumbnail}" class="gallery-thumbnail" />
+        <div class="container">
+        <a href="{item["url"]}" class="text-decoration-none"><h4 class="display-4 p-0">{item["title"]}</h4></a>
+        <p class="card-subtitle">{authors_str}<br/>{affiliations_str}</p>
+        <p class="my-2">{short_description} </p>
+        </div>
+        </div>
+        {modal_str}
 
-            {tags}
+        +++
 
-            :::
+        {tags}
 
-            """
+        :::
+
+        """
 
         grid_body.append('\n'.join([m.lstrip() for m in new_card.split('\n')]))