UI: split js galaxy into smaller modules
UI: small fixes

- create some default ship attrs in genrator
- add common registry mixin to more pages
- animate scene on star dust loading
UI: new galaxy graphics (work in progress)

Currently experimenting with using the vendored
squarefeet/ShaderParticleEngine to generate galaxy gfx w/ better
performance (current one isn't terrible but could be optimized).

Work in progress, playing around w/ modifications to vendored lib
itself, will send upstream once things settle down