Handle unprintable data
Handle unprintable data

Some of the data stored in hiveconf might not be possible to display on
the current terminal. Instead of crashing we replace those unprintable
characters, similar to how things like "ls" work.

Signed-off-by: Frida Flodin <ff857b0d3de7ab66a379b61924cd8bf58e81be7b@cendio.se>

astrand/hiveconf,astrand/hiveconf