Autoadmin: Incorporate the autoadmin app

Incorporate the external django-autoadmin app as a core app
and convert it into a Mayan app. This change adds the new
settings: "COMMON_AUTOADMIN_EMAIL", "AUTOADMIN_PASSWORD", and
"AUTOADMIN_USERNAME".

Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>

mayan/apps/autoadmin/tests/test_views.py

@@ -0,0 +1,45 @@
+from __future__ import unicode_literals
+
+from django.test import TestCase
+from django.urls import reverse
+
+from mayan.apps.common.settings import setting_home_view
+from mayan.apps.common.tests.utils import mute_stdout
+
+from ..models import AutoAdminSingleton
+
+from .literals import TEST_FIRST_TIME_LOGIN_TEXT, TEST_MOCK_VIEW_TEXT
+
+
+class AutoAdminViewCase(TestCase):
+    def setUp(self):
+        with mute_stdout():
+            AutoAdminSingleton.objects.create_autoadmin()
+
+    def _request_home_view(self):
+        return self.client.get(
+            reverse(setting_home_view.value), follow=True
+        )
+
+    def test_login_302_view(self):
+        response = self._request_home_view()
+
+        self.assertContains(
+            response=response, text=TEST_FIRST_TIME_LOGIN_TEXT,
+            status_code=200
+        )
+
+    def test_login_ok_view(self):
+        autoadmin = AutoAdminSingleton.objects.get()
+        logged_in = self.client.login(
+            username=autoadmin.account,
+            password=autoadmin.password
+        )
+        self.assertTrue(logged_in)
+
+        response = self._request_home_view()
+
+        self.assertNotContains(
+            response=response, text=TEST_MOCK_VIEW_TEXT,
+            status_code=200
+        )