Devel 1.4.9 view url

 added view url for dmsf files
    
    the url http://<appl_addr>/dmsf/files/<file_id>/view allows the user to get a file as http request with content-disposition set to inline
    which enables the browser to view files of which it can display the mime-types without downloading them (e.g. insert a image from dmsf into wiki entry)