general work

- renamed nunjucks extension to njk
- removed old demo html files
- started to change CRLF to LF
- detail work on style definitions
- added structure for demo files

source/pages/index.nunjucks

@@ -1,32 +0,0 @@
-<!-- index.nunjucks -->
-{% set pageId = "index" %}
-
-{% extends "index.nunjucks" %}
-
-{% block title %}index{% endblock %}
-{% block head %}
-{{ super() }}
-{% endblock %}
-
-{% block body_content %}
-{% include "partials/page-hover.nunjucks" %}
-<div class="wrap">
-  <ul class="list__link hello">
-    <li><a href="demo-index.html">Index</a></li>
-    <li><a href="demo-blank.html">Blank</a></li>
-    <li><a href="demo-explorer.html">Explorer</a></li>
-    <li><a href="demo-presentation.html">Presentation</a></li>
-    <li><a href="404.html">404</a></li>
-  </ul>
-</div>
-{% endblock %}
-
-{% block script %}
-<script type="text/javascript">
-// Page specific
-// ------------------------------------------------------------------------------
-$( document ).ready(function() {
-  console.log(                     'HIPPIE'            );
-});
-</script>
-{% endblock %}