Hygiene: Document less files with kss, generate style guide

This introduces styling markup and a Makefile command to generate
a style guide for mobile.

To get this working
* Moves rules to more logical places
* Changes a few file paths
* Remove comments using /* (makes kss choke and ignore rules)

Change-Id: I0aa795375e0a7ef21262e3cebf2012f5ca13b3b1