[WIP] Add use of require.css and require.js

[RobLoach]

This is more of brainstorm than a pull request. This makes use of Component Installer's generated require.js and require.css, reducing the micro-management of dependencies, and the amount of HTTP requests.

• require.css: Concatenated stylesheet of all Component CSS files
• require.js: Built RequireJS configuration for loading scripts, along with their dependencies

@simensen and I had troubles getting RequireJS to pick up the correct base URL in Sculpin. We can get around that by telling Sculpin to register it directly in the template:

require.config({
    "baseUrl": "{{ site.url }}/components"
});

Was trying to use hljs.initHighlightingOnLoad(); here, and it wasn't quite working because I believe at the time the require callback is made, the page is already loaded and the event has already been triggered. I could be wrong though, but it is working with the following:

require(['highlightjs', 'bootstrap'], function(hljs) {
    hljs.initHighlighting();
});

Was wondering where this could improve, and was looking for both of your thoughts. I'm trying to get a better understanding of where Component Installer could be better, and how it could satisfy more use cases.

Thanks a lot! Stack looks great ❤️