Add basic backoffice tests

tests/test_backoffice.py

+from .utils import HubBackofficeTestCase
+
+
+class GuestTests(HubBackofficeTestCase):
+    def test_index(self):
+        response = self.session.get('/')
+        self.assertEqual(response.status_code, 200)
+
+        response = self.session.get('/sos')
+        self.assertEqual(response.status_code, 200)
+        self.assertIn('login', response.url)
+
+
+class UserTests(HubBackofficeTestCase):
+    def test_index(self):
+        response = self.admin_session.get('/')
+        self.assertEqual(response.status_code, 200)
+
+        response = self.admin_session.get('/sos')
+        self.assertEqual(response.status_code, 200)
+        self.assertNotIn('login', response.url)