Restructure settings (#882)

* Refactor settings into importable base.

User deployment should use 'from allianceauth.settings.base import *' in their project settings.

* Restructure tests folder.
Remove DOMAIN setting.
Use localhost for services revoked emails.

* Add missing python3.4 typing requirement
typing is included python3.5+

* Remove legacy setup comments
Remove legacy update script

tests/views.py

@@ -0,0 +1,5 @@
+from django.http import HttpResponse
+
+
+def page(request):
+    return HttpResponse('Hello World!')