Fix participant photo

Author: marcoacierno

backend/reviews/templates/grant-review.html

@@ -114,7 +114,7 @@ <h2 class="grant-header">
 
       <div class="review-row">
         <strong>Nationality</strong>
-        <div>{{grant.get_nationality_display}}</div>
+        <div>{{grant.nationality}}</div>
       </div>
 
       <div class="review-row">

backend/schedule/templates/includes/participant/view_info.html

@@ -16,10 +16,12 @@ <h2>{{ title }}</h2>
     </a>
   </div>
 
+  {% if participant.photo_file_id %}
   <div class="form-row">
     <label>Avatar</label>
-    <img src="{{participant.photo}}" style="object-fit: contain;" width="200" height="200" />
+    <img src="{{participant.photo_file.url}}" style="object-fit: contain;" width="200" height="200" />
   </div>
+  {% endif %}
 
   <div class="form-row">
     <label>Bio</label>