Shader nodes / order:
* Have all "Info" nodes next to each other. 
* Moved "Material Output" to the top.
* Have all light shaders (Emission, Background, AO) next to each other. 

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56041 954f8c5b-7b00-dc11-b283-0030488c597c