Consolidate layouts

- Remove page.html
- Rename post-index.html ~> archive.html

_layouts/archive.html

@@ -0,0 +1,25 @@
+---
+layout: default
+---
+
+{% include absolute-url.liquid %}
+
+<div class="archive">
+  <h1>{{ page.title }}</h1>
+  {% capture written_year %}'None'{% endcapture %}
+  {% for post in site.posts %}  
+    {% capture year %}{{ post.date | date: '%Y' }}{% endcapture %}
+    {% if year != written_year %}
+      <h3>{{ year }}</h3>
+      {% capture written_year %}{{ year }}{% endcapture %}
+    {% endif %}
+    <article>
+      {% if post.link %}
+        <h2 class="link-post"><a href="{{ absurl }}{{ post.url }}" title="{{ post.title }}">{{ post.title }}</a> <a href="{{ post.link }}" target="_blank" title="{{ post.title }}"><i class="fa fa-link"></i></a></h2>
+      {% else %}
+        <h2><a href="{{ absurl }}{{ post.url }}" title="{{ post.title }}">{{ post.title }}</a></h2>
+        <p>{{ post.excerpt | remove: '\[ ... \]' | remove: '\( ... \)' | markdownify | strip_html | strip_newlines | escape_once }}</p>
+      {% endif %}
+    </article>
+  {% endfor %}
+</div><!-- /.archive -->