Fixed tick duration. Floating point numbers allowed.

Server alone runs fine at 0.001 s/tick,
Server & UI much slower (max 0.1 sec/tick?)
If the server is too fast, UI will need to catch up (even after ticks are stopped on server)
WHY NOT: Observe decrease in memory used once the ticks are stopped.
Why not sleep in?
Fixed Unit. Changed color of life parameter to red if below 20...