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/authentication/views.py

@@ -6,7 +6,7 @@ from django.contrib.auth import login, authenticate
 from django.contrib.auth.decorators import login_required
 from django.contrib.auth.models import User
 from django.core import signing
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.shortcuts import redirect
 from django.utils.translation import ugettext_lazy as _
 from esi.decorators import token_required