Resolve Dj20 compatibility issues

Temporarily use latest snapshot for esi for dj20

    Correct admin urls include

    Manually correct old ts3 table migration

    Remove obsolete services migrations

    Remove bootstrap pagination package

    Fix url namespacing

allianceauth/timerboard/tests.py

@@ -1,6 +1,6 @@
 from django_webtest import WebTest
 from django.utils import timezone
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.contrib.auth.models import Permission, User
 from django.conf import settings