Slight blog index redesign.

- Include links to month indices on year pages
- Prefix page titles with "Index:"

templates/blog/list.html

@@ -60,7 +60,7 @@ <h2>Starting Points</h2>
     {% endfor %}
     </dd>
 
-    <dt>Years</dt>
+    <dt>Index by year</dt>
     <dd>
     {% for year_section in archive_list.subsections | sort | reverse %}
     {% set year = get_section(path=year_section, metadata_only=true) %}

templates/section.html

@@ -3,13 +3,30 @@
 {% block template_vars %}
   {{super()}}
   {% set page_title = macros::section_path_title(node=node) %}
+
+  {% if section.path is starting_with("/blog/") %}
+    {% set page_title = "Index: " ~ page_title %}
+  {% endif %}
 {% endblock template_vars %}
 
 {% block page_content %}
 
 {% set sort_attribute = "title" %}
 {% if section.path is starting_with("/blog/") %}
   {% set sort_attribute = "date" %}
+
+  {%- set is_blog_year_index = node.components | length == 2 -%}
+  {%- if is_blog_year_index %}
+  <dl class="key-value-twoline">
+    <dt>Index by month</dt>
+    <dd>
+    {% for month_section in node.subsections | sort %}
+      {% set month = get_section(path=month_section) %}
+      <a href="{{ month.path }}">{{ month.components[1] ~ "-" ~ month.components[2] ~ "-01" | date(format="%B") }}</a>
+    {% endfor %}
+    </dd>
+  </dl>
+  {%- endif -%}
 {% endif %}
 
 {{ macros::collection_list(collection=node.pages | sort(attribute=sort_attribute)) }}