adding recommended links to atom specs and atom log link

LogBot/template.rss

@@ -1,10 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<rss version="2.0">
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
 	<channel>
 		<title>{{ title }}</title>
 		<link>{{ log_path }}</link>
 		<description>Collective log writing using XMPP chat groups and LogBot.</description>
 		<lastBuildDate>{{ date }}</lastBuildDate>
+		<atom:link href="{{ log_path }}" rel="self" type="application/rss+xml" />
 		{% for x, post in db["messages"].items() %}
 		<item>
 			<title>{{ title }}</title>