1. Udated category layout

2. Improved scoping and styling for links
3. Sidebar collapse improvements

.themes/classic/source/_layouts/category_index.html

@@ -1,10 +1,15 @@
 ---
-layout: post
-no_meta: true
+layout: page
+no_footer: true
 ---
 
-<div class="blog-archives category">
+<div id="blog-archives" class="category">
 {% for post in site.categories[page.category] %}
+{% capture this_year %}{{ post.date | date: "%Y" }}{% endcapture %}
+{% unless year == this_year %}
+  {% assign year = this_year %}
+  <h2>{{ year }}</h2>
+{% endunless %}
 <article>
   {% include archive_post.html %}
 </article>