GUI API show and change backup parameters

[svaroqui]

 --backup-mydumper-options string                       Extra options (default "--chunk-filesize=1000 --compress --less-locking --verbose=3 --triggers --routines --events --trx-consistency-only --kill-long-queries")
      --backup-myloader-options string                       Extra options (default "--overwrite-tables --verbose=3")
      --backup-mysqldump-options string                      Extra options (default "--hex-blob --single-transaction --verbose --all-databases --routines=true --triggers=true --system=all")

This should be printed with the addition of what we add as extra dynamic options offuscated for password