Lots of stuff

- changed to single monitor for success and failures
- result is now in django model
- started addings tests

django_q/tests/test_qworker.py

@@ -0,0 +1,11 @@
+import pytest
+from django_q.apps import Worker
+
+
+@pytest.fixture
+def qworker():
+    return Worker()
+
+
+def test_worker(qworker):
+    assert len(qworker.stable) == qworker.stable_size