Work around RHBZ #1553807 by checking if anaconda still running
    
    This is the best workaround I can think of for RHBZ #1553807 -
    just check (in the 60 second 'move the mouse' loop) if anaconda
    is still running, based on whether its icon is in the top bar
    (on Workstation live installs only, obviously).
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>