Added sidebar hiding.
h1 was being given a global `float:left`, which is bad. Fixed.
Block display for linkback buttons.
Removed uppercase from h1 default.
Added the series information to getting-started.
Removed the old getting started guide
Removed the weird h1 font color.
Reduced font sizes, tweaked header sizes. Still room for improvement.
Removed excessive left-nav padding
Added top margin to the linkback buttons.
Added linkback partial, and more linkback margin
Changed reduced the size of the left nav.
Made the backlink buttons prettier