Restructure Alliance Auth package (#867)

* Refactor allianceauth into its own package

* Add setup

* Add missing default_app_config declarations

* Fix timerboard namespacing

* Remove obsolete future imports

* Remove py2 mock support

* Remove six

* Add experimental 3.7 support and multiple Dj versions

* Remove python_2_unicode_compatible

* Add navhelper as local package

* Update requirements

allianceauth/services/management/commands/verify_service_accounts.py

@@ -0,0 +1,13 @@
+from django.contrib.auth.models import User
+from django.core.management.base import BaseCommand
+
+from allianceauth.services.tasks import validate_services
+
+
+class Command(BaseCommand):
+    help = "Ensures all service accounts belong to users with required permissions."
+
+    def handle(self, *args, **options):
+        for u in User.objects.all():
+            validate_services(u)
+        self.stdout.write(self.style.SUCCESS('Verified all user service accounts.'))