Update app to the app registry API

apps/documents/__init__.py

@@ -5,8 +5,7 @@ import tempfile
 from django.utils.translation import ugettext_lazy as _
 
 from acls.api import class_permissions
-#from backups.api import AppBackup, ModelBackup, FileBackup
-#from app_registry import register_app, UnableToRegister
+from app_registry.models import App
 from common.utils import validate_path, encapsulate
 from diagnostics.api import DiagnosticNamespace
 from history.permissions import PERMISSION_HISTORY_VIEW
@@ -139,9 +138,10 @@ class_permissions(Document, [
 
 register_statistics(get_statistics)
 
-#try:
-#    app = register_app('documents', _(u'Documents'))
-#except UnableToRegister:
-#    pass
-#else:
-#    AppBackup(app, [ModelBackup(), FileBackup(document_settings.STORAGE_BACKEND)])
+try:
+    app = App.register('documents', _(u'Documents'))
+except UnableToRegister:
+    pass
+else:
+    app.set_dependencies(['app_registry'])
+    #AppBackup(app, [ModelBackup(), FileBackup(document_settings.STORAGE_BACKEND)])