Update and re enable document_signature app

apps/document_signatures/registry.py

@@ -0,0 +1,10 @@
+from __future__ import absolute_import
+
+from django.utils.translation import ugettext_lazy as _
+
+from .icons import icon_document_verify
+
+label = _(u'Document signatures')
+description = _(u'Handles document signatures.')
+dependencies = ['app_registry', 'icons', 'navigation', 'django_gpg', 'documents', 'permissions']
+icon = icon_document_verify