link to html rather than tiddlywiki tiddler
link to html rather than tiddlywiki tiddler

(you can always get to the tiddlywiki version from the html) and users
using the following space can still import these tiddlers into their
local TiddlyWiki.

This addresses #867 and since there has been no objections I guess
this is fine..

TiddlySpace/tiddlyspace,TiddlySpace/tiddlyspace,TiddlySpace/tiddlyspace