TODO/IDEAS for duply and KNOWN PROBLEMS

          - possibility to restore time frames (incl. deleted files)
            realizable by listing each backup and restore from 
            oldest to the newest, problem: not performant
          - search file in all backups function and show available
            versions with backups date (currently impossible as only
            current files get listed)
     !!   - import/export profile from/to .tgz function !!!
          - edit profile opens conf file in vi 
          - implement log-fd interpretation
          - add a duplicity option check against the options pending 
            deprecation since 0.5.10 namely --time-separator
                                             --short-filenames
                                             --old-filenames
          - add 'exclude_<command>' list usage eg. exclude_verify
          - add 'pre/post_<command>' script support
          - check success of commands and react in batches e.g. backup_AND_verify_AND_purge
          - a download/install duplicity option
          - bug: on key import it tries to import again and fails because 
            of already existing key, probably because of old gpgkey in profile
          - hint on install software if a piece is missing

