Fix #515 -- Add check-in lists (#693)

* Data model and migration

* Some backwards compatibility

* CRUD for checkin lists

* Show and perform checkins

* Correct numbers in table and dashboard widget

* event creation and cloning

* Allow to link specific exports and pass options per query

* Play with the CSV export

* PDF export

* Collapse exports by default

* Improve PDF exporter

* Addon stuff

* Subevent stuff, pretixdroid tests

* pretixdroid tests

* Add CRUD API

* Test compatibility

* Fix test

* DB-independent sorting behavior

* Add CRUD and coyp tests

* Re-enable pretixdroid plugin

* pretixdroid config

* Tests & fixes

src/tests/base/test_models.py

@@ -983,6 +983,8 @@ class EventTest(TestCase):
         que1.items.add(i1)
         event1.settings.foo_setting = 23
         event1.settings.tax_rate_default = tr7
+        cl1 = event1.checkin_lists.create(name="All", all_products=False)
+        cl1.limit_products.add(i1)
 
         event2 = Event.objects.create(
             organizer=self.organizer, name='Download', slug='ab1234',
@@ -990,7 +992,7 @@ class EventTest(TestCase):
         )
         event2.copy_data_from(event1)
 
-        for a in (tr7, c1, c2, i1, q1, que1):
+        for a in (tr7, c1, c2, i1, q1, que1, cl1):
             a.refresh_from_db()
             assert a.event == event1
 
@@ -1012,6 +1014,8 @@ class EventTest(TestCase):
         assert que1new.items.get(pk=i1new.pk)
         assert event2.settings.foo_setting == '23'
         assert event2.settings.tax_rate_default == trnew
+        assert event2.checkin_lists.count() == 1
+        assert [i.pk for i in event2.checkin_lists.first().limit_products.all()] == [i1new.pk]
 
 
 class SubEventTest(TestCase):