----------
/$LISTNAME/?before=$GIT_COMMIT -> HTML only
-/$LISTNAME/all.html?before=$GIT_COMMIT -> HTML only, includes replies
/$LISTNAME/index.atom.xml -> Atom feed
/$LISTNAME/all.atom.xml -> Atom feed, includes replies
/$LISTNAME/m/$MESSAGE_ID.html -> HTML content (short quotes)
/$LISTNAME/m/$MESSAGE_ID.txt -> raw original
+/$LISTNAME/m/$MESSAGE_ID -> 301 to .html version
/$LISTNAME/f/$MESSAGE_ID.html -> HTML content (full quotes)
+/$LISTNAME/f/$MESSAGE_ID -> 301 to .html version
+/$LISTNAME/f/$MESSAGE_ID.txt -> 301 to m/$MESSAGE_ID.txt
/$LISTNAME/t/$MESSAGE_ID.html -> HTML content of thread
/$LISTNAME/t/$MESSAGE_ID.mbox -> mbox content of thread