change for DMSF support: use file description as title instead of file name // refs #53
change for DMSF support: use file description as title instead of file name // refs #53

cherry-picked from 8e8dc0243c397c9e1572bf40064a35d46aad4631

paginagmbh/redmine_lightbox2,paginagmbh/redmine_lightbox2,paginagmbh/redmine_lightbox2