Added placeholder to collection select

app/blueprints/frontend/templates/parse.j2

@@ -88,6 +88,8 @@
                 <select class="form-select flex-fill" size="3">
                     {% for collection in collections %}
                         <option value="{{collection.id}}">{{ collection.name }}</option>
+                    {% else %}
+                        <option disabled>Добавьте новую базу пользователей</option>
                     {% endfor %}
                 </select>
             </section>