Sticky footer changes.

Issue #104. 

I suspect that I am using a different version of lessc (1.4.2) as the diff of main.less.min.css was a mess. I also noticed that main.less and main.less.min.css were committed at different times.  If main.less.min.css is more up to date then you will not want to merge this change. If so, please let me know and I can modify the minified version directly.