docs: many style tweaks
Review Request #1544 - Created Dec. 27, 2014 and submitted
tweak Table-of-Contents styles a bunch. tweak other styles, too.
See it in action: http://pantsbuild.github.io/lahosken-demo/
Definitely looks quite a bit better, thanks. As a general thought: seeing us maintain this much CSS by hand with a bunch of hard coded color codes and font sizes, I'm tempted to say that we should be writing this in Sass for maintainability. But that's a nice-to-have and outside the scope of this change.