#86 Edit deadline Compensation

* adds support for editing of deadlines
* adds buttons and urls
* adds w-10 as base css-class for all action columns

ema/tests/test_views.py

@@ -63,11 +63,11 @@ class EmaViewTestCase(CompensationViewTestCase):
         self.action_edit_url = reverse("ema:action-edit", args=(self.ema.id, action.id))
         self.action_remove_url = reverse("ema:action-remove", args=(self.ema.id, action.id,))
 
-        self.deadline = Deadline.objects.create(
+        self.deadline = Deadline.objects.get_or_create(
             type=DeadlineType.FINISHED,
             date="2020-01-01",
             comment="TESTCOMMENT",
-        )
+        )[0]
         self.ema.deadlines.add(self.deadline)
 
         self.deadline_new_url = reverse("ema:new-deadline", args=(self.ema.id,))