Modified JS event so that it complies with standards

Changed onClick on option to onChange on select, now works on WebKit browsers
Tweak coordinates in examples/universes/small.rb
UI: better star gfx, remove unused shaders
Some TODO comments
Issue #8: Fix cmd cycle & helpers to only target commands

Recently added Event & EventHandler support to
manufactured subsystem was breaking command cycle
which was blindly calling 'id' on all registry
entities (which EventHandler doesn't define).

Command cycle now verifies it is checking commands
or at least objects that respond to the necessary
method calls before attempting to process.
UI: small path fix
UI: follow on tweaks to star rendering