added check if empty

templates/solar-zgodovina.html

@@ -98,7 +98,13 @@
         }%}
 
 
-
+        {% if upload_history|length == 0 %}
+        <div class="row">
+            <div class="col-6">
+                <p>Zgodovina sodelovanja je trenutno še prazna.</p>
+            </div>
+        </div>
+        {% endif %}
         {% for item in upload_history %}
             {% set item_values = [] %}
             {% if institution_names[loop.index - 1] %}