vaersion formset in base html

src/dokumentor/templates/base.html

@@ -124,7 +124,7 @@
     <script src="{% static 'js/lib/jquery-ui-1.10.3.custom.min.js' %}"></script>
     <script src="{% static 'js/lib/jquery.ui.datepicker-ru.js' %}"></script>
     <script src="{% static 'js/lib/jquery.form.js' %}"></script>
-    <script src="{% static 'js/formset-events.js' %}?t=1489057872"></script>
+    <script src="{% static 'js/formset-events.js' %}?ver={% file_version 'js/formset-events.js' %}"></script>
     <script src="{% static 'js/lib/jquery.formset.js' %}"></script>
     <script src="{% static 'js/lib/jquery.blockUI.js' %}"></script>
     <script src="{% static 'js/lib/entertotab.js' %}"></script>