Update omega-cosmos-map.rb to work w/ updated client DSL
Add dir arg to Elliptical#random & rand_orbit to client dsl

Also trivial cleanups to both
Tidy up examples/universes/medium.rb
UI: increase number of systems loaded by default from 5 to 15
UI: cleanup entity loading / processing

No functional changes outside of reorg to make functionality
more aparent

Flow is fairly stable / set now, docs and tests will be updated
to reflect new layout in the near future