agendas: import/export end time event field (#88615)

tests/manager/test_snapshot.py

@@ -57,7 +57,7 @@ def test_agenda_history(settings, app, admin_user):
             assert resp.text.count('<del>') == 0
         else:
             assert resp.text.count('diff_sub') == 1
-            assert resp.text.count('diff_add') == 16
+            assert resp.text.count('diff_add') == 17
             assert resp.text.count('diff_chg') == 0
     resp = app.get(
         '/manage/agendas/%s/history/compare/?version1=%s&version2=%s'
@@ -66,7 +66,7 @@ def test_agenda_history(settings, app, admin_user):
     assert 'Snapshot (%s)' % (snapshot1.pk) in resp
     assert 'Snapshot (%s) -  (Version 42.0)' % (snapshot2.pk) in resp
     assert resp.text.count('diff_sub') == 1
-    assert resp.text.count('diff_add') == 16
+    assert resp.text.count('diff_add') == 17
     assert resp.text.count('diff_chg') == 0
 
     # check compare on application version number