underlaydir gets a mtime newer than the mtime the removed file had.
* Pages rendered from files in the underlaydir should not have a history
link, since there's no file in the svn repo to view the history of.
+* Markdown will try to expand stuff inside postprocessordirectives. For
+ example, if there are two *'s, it will turn them to html em's, which
+ breaks things unexpectedly and requires escaping.