improve colors in conference pages

Reduce number of colors.
improve nav bar and footer

Add ICFP to top nav bar.
cufp.scss: improve .pane-subtle
2014/index.html: slight design change
change orbit settings

Now resuming animation on mouse-out.
fix formatting issue in small screen

Add padding to nested row. For some reason, on small screens, the row
has no padding.
forward old links for conference and session pages