Gah, these things are pain to debug - "undefined" value in uniforms can lead to very weird behaviors.

Attributes were not in fact updated before.

Testing out texImage2D instead of texSubImage2D again.
@alteredq: which browsers/os didn't like this combo?

Updated misc_sound example with same functionality.

Fixed examples that were using them.

(normal maps, textures packed in blend file, copy textures, urlBaseType, texture params)

Also fixed broken reload handling and bumped up version number.

All examples work. Now just need to port Blender exporter changes to 2.58 version.

Plus some more Loader changes:

- fixed diffuse color and opacity being skipped when diffuse texture is present in JSON
- more proper handling of Phong materials (now use ambient / diffuse / specular / shininess from JSON)
- added handling of wrap / offset / repeat parameters for all textures

Fixed broken multiple lights indices in new normal map shader and changed displacement scale and bias to saner values.

Fixed broken postprocessing and Earth examples (were not yet translated to use new normal map shader).