UI: decouple scene location from entity location

- replaces individual entity constraint scaling w/ uniform
  scene based manipulators

- includes optimizations for ship & other gfx to tighten
  coupling between 3D locations / components

- tests are broken w/ this commit, will be fixed soon
UI: scale positions of system level entities

Since system entities now are being generated w/ realistic
constraints, need to scale their positions when rendering so
as to be able to provide high level view.

Contains main other UI cleanups / simplifications

Work in progress, most likely functionality and tests are
broken as of this commit
Update some examples to use constraints

Examples include interactive, small universe, and user seeder

Other examples needs to be updates as well. Contains a couple
small tweaks to ship movement & tracking to better fit larger
data sets