Fix bug: addional '/' added to url when not using image as attachment
Fix bug: addional '/' added to url when not using image as attachment

git-svn-id: ed544939975cae3d3c2b56bb425eee2c81b7e575@33191 ee427ae8-e902-0410-961c-c3ed070cd9f9

Symfony-Plugins/sfDoctrineActAsSluggableAttachmentPlugin