use markdown2, add forced login. Added breadcrumbs

templates/thread.html

@@ -3,6 +3,7 @@
 {%- from 'moderator.html' import moderate_thread with context %}
 
 {%- block content %}
+<p><span> &laquo; </span><a href="{{ url_for('forum', forum_id = forum_id) }}">{{ forum_title }}</a></p>
 {%- if user is not none and user.is_moderator() -%}
 <p>{{ moderate_thread(thread_id, hidden) }}</p>
 {%- endif -%}