again major update: in order to rename a manual filer file from xxx.tmp to xxx one needs to flag the last run (FILER_STATUS_LAST)
can now perform bitwise operations on FILER_STATUS_ constants (-> more flexibility in which hooks to invoke.)
hook_filer_FILER_NAME_cron renamed to hook_filer_FILER_NAME since it never only got called on cron.
Filer tables update: left out useless info, should be used as a quick and easy way to clear / process queues (admins) or download files (users / editors)
Manual files that are left unfinished can now be deleted.
Added synchronize menu link to clean up the db (might be removed in the future as I never had any real use for it)