Use django to do lookups. Removes dj-user-accounts

requirements/base.txt

@@ -5,7 +5,6 @@ django-reversion==1.10.1
 django-sitetree>=1.7.0
 django-taggit==0.18.0
 django-timezone-field==1.3
-django-user-accounts==1.3.1
 easy-thumbnails==2.3
 html5lib==0.9999999
 markdown==2.6.5

symposion/proposals/views.py

@@ -5,7 +5,7 @@ import sys
 
 from django.conf import settings
 from django.contrib.auth.decorators import login_required
-from django.core.exceptions import ObjectDoesNotExist
+from django.core.exceptions import ObjectDoesNotExist, MultipleObjectsReturned
 from django.core.urlresolvers import reverse
 from django.db.models import Q
 from django.http import Http404, HttpResponse, HttpResponseForbidden
@@ -17,8 +17,6 @@ from django.contrib.auth.models import User
 
 from django.utils.translation import ugettext_lazy as _
 
-from account.models import EmailAddress
-
 from symposion.proposals.models import (
     ProposalBase, ProposalSection, ProposalKind
 )
@@ -137,10 +135,16 @@ def proposal_speaker_manage(request, pk):
                 return pending, token
             email_address = add_speaker_form.cleaned_data["email"]
             # check if email is on the site now
-            users = EmailAddress.objects.get_users_for(email_address)
-            if users:
+            try:
+                user = User.objects.get(email=email_address)
+            except MultipleObjectsReturned:
+                # FIXME: This is not handled in the previous code, so I'm not
+                # going to frett on this now, but should be handled as it is
+                # an occourance that really, really shouldn't occour.
+                # Previously, code took [0] from the list and continued.
+                raise NotImplementedError("Non unique email should not occour")
+            if user:
                 # should only be one since we enforce unique email
-                user = users[0]
                 message_ctx["user"] = user
                 # look for speaker profile
                 try: