Integrate django-autoadmin into the core apps

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/autoadmin/managers.py

@@ -0,0 +1,57 @@
+from __future__ import unicode_literals
+
+import logging
+
+from django.contrib.auth import get_user_model
+from django.core import management
+from django.db import models
+
+from .settings import setting_email, setting_password, setting_username
+
+logger = logging.getLogger(__name__)
+
+
+class AutoAdminSingletonManager(models.Manager):
+    def create_autoadmin(self):
+        UserModel = get_user_model()
+
+        if setting_password.value is None:
+            password = UserModel.objects.make_random_password()
+        else:
+            password = setting_password.value
+
+        try:
+            UserModel.objects.get(
+                **{UserModel.USERNAME_FIELD: setting_username.value}
+            )
+        except UserModel.DoesNotExist:
+            logger.info(
+                'Creating superuser -- login: %s, email: %s, password: %s',
+                setting_username.value, setting_email.value, password
+            )
+            management.call_command(
+                'createsuperuser',
+                **{
+                    UserModel.USERNAME_FIELD: setting_username.value,
+                    'email': setting_email.value,
+                    'interactive': False
+                }
+            )
+
+            account = UserModel.objects.get(
+                **{UserModel.USERNAME_FIELD: setting_username.value}
+            )
+            account.set_password(raw_password=password)
+            account.save()
+            # Store the auto admin password properties to display the
+            # first login message
+            auto_admin_properties, created = self.get_or_create()  # NOQA
+            auto_admin_properties.account = account
+            auto_admin_properties.password = password
+            auto_admin_properties.password_hash = account.password
+            auto_admin_properties.save()
+        else:
+            logger.error(
+                'Super admin user already exists. -- login: %s',
+                setting_username.value
+            )