Refactored gs_renderer a little
Fixed zombie bullets bug, added obstacle rendering, using three.js for debugging
Hacky way to get selection working in 3D
Fix tests
Merge branch 'master' into render_fixes; only show your selected units

Conflicts:
	game/static/game/js/game.js
Merge pull request #58 from hellochar/render_fixes

Added obstacle rendering and selection circle rendering