Replace "unnamed" with some more unique names

[TheAssassin]

People who've worked with Docker before know that containers without an explicit name get assigned a semi-random name, composed from an attribute and a (last)name. I figured it might be a good idea to implement something similar in Blue Nebula. That way, people who didn't choose a name will at least be identifiable by some likely unique nick. Instead of being called "unnamed", they might be called "boring_wozniak".