Internacionaliza string

sapl/base/admin.py

@@ -1,8 +1,9 @@
 from django.contrib import admin
 from django.core.urlresolvers import reverse
 from django.shortcuts import redirect
-
+from django.utils.translation import ugettext_lazy as _
 from reversion.models import Revision
+
 from sapl.base.models import ProblemaMigracao
 from sapl.utils import register_all_models_in_admin
 
@@ -37,7 +38,7 @@ class RevisionAdmin(admin.ModelAdmin):
     date_hierarchy = ('date_created')
 
     def change_view(self, request, obj=None):
-        self.message_user(request, 'You cannot change history.')
+        self.message_user(request, _('You cannot change history.'))
         return redirect('admin:reversion_revision_changelist')
 
 admin.site.register(Revision, RevisionAdmin)