Update init files to register more app with the app registre app as well as the backup app

apps/permissions/__init__.py

@@ -3,14 +3,17 @@ from __future__ import absolute_import
 from django.contrib.auth.models import User
 from django.db.models.signals import post_save
 from django.core.exceptions import ObjectDoesNotExist
+from django.utils.translation import ugettext_lazy as _
 
+from backups.api import AppBackup, ModelBackup
+from app_registry import register_app, UnableToRegister
 from navigation.api import bind_links, register_multi_item_links
 from project_setup.api import register_setup
 
 from .conf.settings import DEFAULT_ROLES
-from .models import Role
 from .links import (role_list, role_create, role_edit, role_members,
     role_permissions, role_delete, permission_grant, permission_revoke)
+from .models import Role
 
 bind_links([Role], [role_edit, role_delete, role_permissions, role_members])
 bind_links([Role, 'role_list', 'role_create'], [role_list, role_create], menu_name='secondary_menu')
@@ -37,3 +40,10 @@ def user_post_save(sender, instance, **kwargs):
 post_save.connect(user_post_save, sender=User)
 
 register_setup(role_list)
+
+try:
+    app = register_app('permissions', _(u'Permissions'))
+except UnableToRegister:
+    pass
+else:
+    AppBackup(app, [ModelBackup()])