diff --git a/oim_cms/test_api.py b/oim_cms/test_api.py
index 9d8f729..5a9b2ad 100644
--- a/oim_cms/test_api.py
+++ b/oim_cms/test_api.py
@@ -33,13 +33,13 @@ def setUp(self):
         self.loc2 = mixer.blend(Location, manager=None)
         # Generate a basic org structure.
         # NOTE: don't use mixer to create OrgUnit objects (it breaks MPTT).
-        self.dept = OrgUnit.objects.create(name='Department 1', unit_type=0)
+        self.dept = OrgUnit.objects.create(name='Department 1', unit_type=0, acronym='DEPT')
         self.div1 = OrgUnit.objects.create(
-            name='Divison 1', unit_type=1, parent=self.dept, location=self.loc1)
+            name='Divison 1', unit_type=1, parent=self.dept, location=self.loc1, acronym='D1')
         self.cc1 = CostCentre.objects.create(
             name='Cost centre 1', code='001', division=self.div1, org_position=self.div1)
         self.div2 = OrgUnit.objects.create(
-            name='Divison 2', unit_type=1, parent=self.dept, location=self.loc2)
+            name='Divison 2', unit_type=1, parent=self.dept, location=self.loc2, acronym='D2')
         self.cc2 = CostCentre.objects.create(
             name='Cost centre 2', code='002', division=self.div2, org_position=self.div2)
         # Give each of the divisions some members.
@@ -274,9 +274,16 @@ def test_list_filtering(self):
         self.assertNotContains(response, self.user2.email)
 
     def test_detail(self):
+        """Test the DepartmentUserResource detail response
+        """
+        # Test detail URL using ad_guid.
         url = '/api/users/{}/'.format(self.user1.ad_guid)
         response = self.client.get(url)
         self.assertEqual(response.status_code, 200)
+        # Test URL using email also.
+        url = '/api/users/{}/'.format(self.user1.email.lower())
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
 
     def test_org_structure(self):
         """Test the DepartmentUserResource org_structure response
diff --git a/organisation/admin.py b/organisation/admin.py
index 8312c99..4cfcbbd 100644
--- a/organisation/admin.py
+++ b/organisation/admin.py
@@ -10,6 +10,7 @@
 from django.utils.html import format_html
 from django_mptt_admin.admin import DjangoMpttAdmin
 from leaflet.admin import LeafletGeoAdmin
+from reversion.admin import VersionAdmin
 from threading import Thread
 import time
 
@@ -41,7 +42,9 @@ def clean_employee_id(self):
 
 
 @register(DepartmentUser)
-class DepartmentUserAdmin(ModelAdmin):
+class DepartmentUserAdmin(VersionAdmin):
+    # Override the default reversion/change_list.html template:
+    change_list_template = 'admin/organisation/departmentuser/change_list.html'
     form = DepartmentUserForm
     list_display = [
         'email', 'title', 'employee_id', 'username', 'active', 'vip', 'executive',
@@ -243,7 +246,7 @@ class CostCentreAdmin(ModelAdmin):
     search_fields = (
         'name', 'code', 'chart_acct_name', 'org_position__name', 'division__name',
         'org_position__acronym', 'division__acronym')
-    list_filter = ('active',)
+    list_filter = ('active', 'chart_acct_name')
     raw_id_fields = (
         'org_position', 'manager', 'business_manager', 'admin', 'tech_contact')
 
diff --git a/organisation/api.py b/organisation/api.py
index 39f374e..7ecd2c2 100644
--- a/organisation/api.py
+++ b/organisation/api.py
@@ -161,7 +161,7 @@ def list(self):
             # No other filtering:
             # Return 'active' DU objects, excluding predefined account types and contractors.
             FILTERS = DepartmentUser.ACTIVE_FILTER.copy()
-            users = DepartmentUser.objects.filter(**FILTERS).exclude(account_type__in=[4, 5, 9, 10, 11, 12, 14, 15, 16])
+            users = DepartmentUser.objects.filter(**FILTERS).exclude(account_type__in=[4, 5, 9, 10, 11, 12, 14, 16])
             users = users.exclude(expiry_date__lte=timezone.now())
         # Non-mutually-exclusive filters:
         if 'o365_licence' in self.request.GET:
@@ -292,7 +292,7 @@ def org_structure(self, sync_o365=False, exclude_populate_groups=False):
         """
         qs = DepartmentUser.objects.filter(**DepartmentUser.ACTIVE_FILTER)
         # Exclude predefined account types:
-        qs = qs.exclude(account_type__in=[4, 5, 9, 10, 11, 12, 14, 15, 16])
+        qs = qs.exclude(account_type__in=[4, 5, 9, 10, 11, 12, 14, 16])
         if exclude_populate_groups:  # Exclude objects where populate_primary_group == False
             qs = qs.exclude(populate_primary_group=False)
         structure = []
diff --git a/organisation/models.py b/organisation/models.py
index c179d99..ed16084 100644
--- a/organisation/models.py
+++ b/organisation/models.py
@@ -479,7 +479,7 @@ def __str__(self):
         if self.acronym:
             name = '{} - {}'.format(self.acronym, name)
         if self.cc():
-            return '{} - CC{}'.format(name, self.cc())
+            return '{} - CC {}'.format(name, self.cc())
         return name
 
     def members(self):
diff --git a/organisation/templates/admin/organisation/departmentuser/change_list.html b/organisation/templates/admin/organisation/departmentuser/change_list.html
index 92bd89c..515297e 100644
--- a/organisation/templates/admin/organisation/departmentuser/change_list.html
+++ b/organisation/templates/admin/organisation/departmentuser/change_list.html
@@ -1,4 +1,4 @@
-{% extends "admin/change_list.html" %}
+{% extends "reversion/change_list.html" %}
 
 {% block object-tools-items %}
     <li>
diff --git a/requirements.txt b/requirements.txt
index 8623134..a3a9b26 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,14 +1,14 @@
 Django==1.10.7
-django-extensions==1.7.9
+django-extensions==1.8.1
 django-uwsgi==0.1.6
 git+https://github.com/parksandwildlife/dpaw-utils.git@0.3a16#egg=dpaw-utils
-wagtail==1.10.1
+wagtail==1.11.1
 wagtailtinymce==4.2.1.5
 django-queryset-csv==1.0.0
 django-mptt==0.8.7
-django-mptt-admin==0.4.4
+django-mptt-admin==0.4.6
 django-leaflet==0.21.0
-django-reversion==2.0.8
+django-reversion==2.0.9
 python-dateutil==2.4.2
 django-model-utils==2.5
 django-debug-toolbar==1.7