Make mp3worker only install console mock if self.console is undefined
Clean up player/references.ts

- Improve ordering
- Remove redundant entries
Remove duplicate - and active - gfx/shapes.js test file inclusion from shumway.package
Prevent compilation and loading of native classes we don't support anyway

... and have no plans to support.
Merge pull request #1307 from tschneidereit/nat

Cleanup, mostly around dependency management