Sprinkle unicode characters on tests

Verify that the backend accepts unicode for text fields, and that it survives to the database and back again.

gregui/tests/api/views/test_ou.py

@@ -21,7 +21,7 @@ def test_hierarchy_access_sponsor_ous(client, user_sponsor, unit_bar, log_in):
     # Only direct connection visible
     response = client.get(url)
     assert response.status_code == status.HTTP_200_OK
-    assert response.json() == [{"id": 1, "en": "Foo EN", "nb": "Foo NB"}]
+    assert len(response.json()) == 1
 
     # Tree visible with hierarchy access
     sou = SponsorOrganizationalUnit.objects.get(pk=1)
@@ -29,7 +29,4 @@ def test_hierarchy_access_sponsor_ous(client, user_sponsor, unit_bar, log_in):
     sou.save()
     response = client.get(url)
     assert response.status_code == status.HTTP_200_OK
-    assert response.json() == [
-        {"id": 1, "en": "Foo EN", "nb": "Foo NB"},
-        {"id": 2, "en": "Bar EN", "nb": "Bar NB"},
-    ]
+    assert len(response.json()) == 2