Add permalinks without .html suffix and fix deprecated config option.

[JesseHerrick]

Just a small fix, but I've never liked .html in my permalinks. I've also changed name from the default to Shoes and pygments: true to highlighter: pygments.

[JesseHerrick]

This is kind of a part of #52. Also, here are the new routes:

/downloads.html => /downloads/
/tutorials.html => /tutorials/
/blog.html => /blog/
/contribute.html => /contribute/
/about.html => /about/
/get_help.html => /help/

[jasonrclark]

Definitely like using the non-.html style for the links. 👍 on that!

This looks like the PR pulled in a lot of other CSS changes beyond your description. Was that intended?

Haven't read through all of them in detail but I'm betting a few conflict with the Bootstap+FontAwesome PR @nathancarnes put up on #59 (which I was considering getting merged fairly soon). Any thoughts on how best to proceed there?

[JesseHerrick]

Oh, my bad @jasonrclark. I've been working away at the new design. I only meant to PR bcf4102. The design changes I made are not ready.

[JesseHerrick]

I'm going to close this PR, cherry pick the proper changes into a new branch and then PR again.