Mirror test layout, domcontentloaded waits, backup DB writes outside threads

tests/api/mensen.py

@@ -0,0 +1,8 @@
+# retoor <retoor@molodetz.nl>
+
+
+def test_mensen_lists_real_accounts_only(anon):
+    people = anon.get("/mensen", headers={"Accept": "application/json"}).json()
+    names = [person["username"] for person in people.get("people", [])]
+    assert names[0] == "retoor"
+    assert set(names) <= {"retoor", "lezer"}