Create j.ico

Change colour scheme, plus icon letter to J.
added unsemantic grid to test responsiveness.

>added css\unsemantic grid (from unsemantic.com)
>index.html_old is original index page for reference
>responsive.html is a demo of the responsive framework
>index.html rewritten for responsive. Currently includes test display to
help understand responsive framework.
>j.ico is update with conforming colours, and changed to J!