Change .html.twig to .html

Change other file extensions for consistency.

source/talks.html

@@ -0,0 +1,43 @@
+---
+layout: default
+title: Talks
+body_class: page--talks
+meta:
+  description: 'Information about previous and upcoming talks that Oliver has presented at conferences and user groups'
+use:
+  - talks
+---
+<h1>Talks</h1>
+
+<p>I regularly speak at conferences and user groups about a range of subjects relating to Drupal, PHP and web development. If you would like to me to speak at your group or conference, please <a href="/contact/">get in touch</a>.</p>
+
+{% set now = 'now'|date('U') %}
+{% set talks = data.talks %}
+
+{% set found = false %}
+{% for talk in talks if talk.date >= now %}
+  {% if loop.first %}
+    {% set found = true %}
+    <h2>Upcoming Talks</h2>
+    <dl>
+  {% endif %}
+
+  {% include 'talk-listing-item' %}
+{% endfor %}
+{% if found %}
+  </dl>
+{% endif %}
+
+{% set found = false %}
+{% for talk in talks if talk.date < now %}
+  {% if loop.first %}
+    {% set found = true %}
+    <h2>Previous Talks</h2>
+    <dl>
+  {% endif %}
+
+  {% include 'talk-listing-item' %}
+{% endfor %}
+{% if found %}
+  </dl>
+{% endif %}