move pagedown conversation to the pagedown_plugin page

doc/plugins/wmd/discussion.mdwn

@@ -3,62 +3,11 @@ I've tried to retrieve the wmd-editor source tarball lately, but the site seems
 From what I've read on the Internet, wmd-editor is not (yet?) free software by itself, and its author has gone MIA.
 But it looks like somebody recently took the step to rewrite a wmd-clone under a saner license, see [[pagedown|http://code.google.com/p/pagedown/source/browse/]].
 
-Given all the above, what about upgrading this plugin to use pagedown instead of wmd? It seem a clear win to me...
+Given all the above, what about upgrading this plugin to use pagedown instead of wmd? It seem a clear win to me... --(unsigned)
 
-> AFAICS, pagedown is a modified version of WMD. Let's 
-> look at its license file: --[[Joey]] 
+> I have moved that conversation to the pagedown plugin todo [[todo/pagedown_plugin/discussion]] page, which now actually has an implementation! --[[anarcat]]
 
-<pre>
-A javascript port of Markdown, as used on Stack Overflow
-and the rest of Stack Exchange network.
-
-Largely based on showdown.js by John Fraser (Attacklab).
-
-Original Markdown Copyright (c) 2004-2005 John Gruber
-  <http://daringfireball.net/projects/markdown/>
-
-
-Original Showdown code copyright (c) 2007 John Fraser
-
-Modifications and bugfixes (c) 2009 Dana Robinson
-Modifications and bugfixes (c) 2009-2011 Stack Exchange Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy [...]
-</pre>
-
-> Ok, so it says it's based on showdown. John Fraser wrote showdown and also 
-> WMD, which IIRC was built on top of showdown. (Showdown converts the
-> markdown to html, and WMD adds the editor UI.)
-> 
-> I can nowhere find a actual statement of the copyright of showdown or
-> WMD. <http://code.google.com/p/wmd/> has a "MIT License" notice on it,
-> but this is clearly just the license chosen when signing up at google
-> code for the repo that would be used for a rewrite of the code, and the only thing 
-> said about the previous 1.0 release of WMD is "use it freely", which is not
-> specific enough to be a grant of license, and is moreover not a free
-> software license, as it does not cover distribution or modification.
-> 
-> Which was all covered in the thread here, 
-> when StackOverflow decided to start working on pagedown.
-> <http://blog.stackoverflow.com/2008/12/reverse-engineering-the-wmd-editor/>
-> This thread does not give any indication that they ever managed to get
-> a license grant for WMD/showdown. It frankly, does not inspire confidence
-> that the people working on this care about the license.
-> 
-> It would probably be pretty easy to adapt the ikiwiki wmd plugin 
-> to use pagedown. But without a clear and credible license, why?
-> 
-> (Note that I have a wmd-new branch in my ikiwiki git repo that
-> uses <https://github.com/derobins/wmd>, which was an earlier
-> version of pagedown (probably, not entirely clear).)
-> 
-> An alternate alternative is markitup: <http://markitup.jaysalvat.com/>
-> It has a clear history and a credible license (MIT or GPL dual license).
-> It's also easily extensible to other formats so could handle rst etc.
-> It does not, however, have a markdown to html converter -- for 
-> previewing it has to talk to the server with AJAX.
-> --[[Joey]] 
+Other conversations:
 
 >> I've got pagedown working on my personal site (simon.kisikew.org) but I'm not sure how
 >> I can inject the relevant &lt;div&gt;'s in the right place. They need to go **above**