TODO list for RescueBRU

feature: save config of backup in a backup.conf file to include devices. 
    Check for this file when doing a new backup. Offer to use existing
    config.
    
feature: replace spaces with underscores in new image name.

bug: when getting a list of images in imageselect() sometime a busy
    server can make the client appear to lock up. Need a "please wait.."
    message so user doesn't panic.

bug: server may appear to lock up when using several functions. Need a
    "please wait..." message for anything that might have to load data
    from the CD.

bug: settings selections submenus don't preselect the current setting as
    the default-item in the dialog.