cmd/server: rename to cmd/quantastic

Otherwise 'got install' calls the resulting binary 'server' which is too
generic. I guess this also means that quantastic will always be a single
binary, and if something like a worker is needed, this will be done as a
sub-command a la 'quantastic worker'.
testutil: rename to just util
.gitignore: remove quantastic ignore

We now install quantastic globally, not in the local dir.
util: Implement Sdump
Advance model and populate from mite

This is the first time quantastic is able to render useful data!