Texture.CreateFromBase64String

Hi, 

I'm not sure this is really a bug, and maybe this was already discussed in the forum.

Anyway if you create two textures with  CreateFromBase64String with differents buffer and a same name. The second texture is ignored. This probably  come from texture cache ? PG : http://www.babylonjs-playground.com/#8UPYJ#4

If two differents name are used, it works (http://www.babylonjs-playground.com/#8UPYJ#5) .