add a guide topics system

app/templates/guides/_layout.html

@@ -0,0 +1,21 @@
+{% extends 'base.html' %}
+{% from 'common/macros.html' import guide_sections with context %}
+{% block title %}guide - {{ guide.title }}{% endblock %}
+{% block content %}
+<div class="darkbg" id="top">
+  <h1 class="thread-title">Guide: {{ guide.title }}</h1>
+  <ul class="horizontal">
+    <li><a href="{{ url_for('guides.category_index', category=category) }}">&uarr; Back to category</a></li>
+    {% if prev_guide %}
+      <li><a href="{{ prev_guide.url }}">&larr; Previous: {{ prev_guide.title }}</a></li>
+    {% endif %}
+    {% if next_guide %}
+      <li><a href="{{ next_guide.url }}">&rarr; Next: {{ next_guide.title }}</a></li>
+    {% endif %}
+  </ul>
+</div>
+{% call() guide_sections() %}
+  {% block guide_content %}
+  {% endblock %}
+{% endcall %}
+{% endblock %}