Add extends() utility function.

Remove utility function names.
Use Utils.extends for inheritance.
Rename/simplify Game constructor properties.
More replacement words. Hide private RenderList method.
Add regex support for replaceAll.
Remove unnecessary RenderableQuad check.
Minify CSS.
Add Geometry push() method for batch vertex/face addition.
Integrate Geometry push() method into tests.

Fix incorrect utils path in Controls.