DDFileLister: Made 'view file' from the xfer menu actually work when used as a loadable module (FL_VIEW). Updated extended information view for files.
DDFileLister: Made 'view file' from the xfer menu actually work when used as a loadable module (FL_VIEW). Updated extended information view for files. When used as a loadable module, choosing the 'view file' from the file transfer menu (which calls bbs.list_files() with the FL_VIEW bit), this is now implemented (previously, DDFileLister did nothing for FL_VIEW). Also, when viewing a file's extended information, more information is now displayed, to try to match Synchronet's stock file lister