Removed link from header

I'm not sure why I made "El Wiki" a link to /wiki/ in the first place,
so I'm removing the link.
Added creole link resolver

Function for resolving bare links when rendering creole.  A bare link
is one that (presumably) names a page: [[example]] or [[link|text]].

See also the docstring for `creole-link-resolver-fn'.
Merge branch 'master' into nics-demo-refactor-fixup

Conflicts:
	elwiki.el
why have /wiki/?
make the header or footer stuff cleaner and use oddmuse
make sure the htmlbuffer is killed and add css-decl for making CSS
grab the page-content upfront
fix render-page to use CSS styles from the render
temporarily remove .creole from the served files so we can serve the emacswiki
indentation.
sketchy implementation of random
slightly better random implementation