Remove use of extra_columns and move logic to models and apps.

mayan/apps/acls/apps.py

@@ -3,6 +3,7 @@ from __future__ import unicode_literals
 from django.utils.translation import ugettext_lazy as _
 
 from common import MayanAppConfig, menu_object, menu_sidebar
+from navigation import SourceColumn
 
 from .links import link_acl_new, link_acl_delete, link_acl_permissions
 from .models import AccessControlList
@@ -15,6 +16,14 @@ class ACLsApp(MayanAppConfig):
     def ready(self):
         super(ACLsApp, self).ready()
 
+        SourceColumn(
+            source=AccessControlList, label=_('Permissions'),
+            attribute='get_permission_titles'
+        )
+        SourceColumn(
+            source=AccessControlList, label=_('Role'), attribute='role'
+        )
+
         menu_object.bind_links(
             links=(link_acl_permissions, link_acl_delete),
             sources=(AccessControlList,)