Wikilinks to Published Webs

Should be to the published action. This
didn't work right for inter-web links.
(Reported by Mike Shulman)

Also, change some .length's to .size's
(for Andrew Stacey)

app/controllers/wiki_controller.rb

@@ -98,7 +98,7 @@ class WikiController < ApplicationController
           <div class="byline">
             #{page.revisions? ? "Revised" : "Created" } on #{ page.revised_at.strftime('%B %d, %Y %H:%M:%S') }
             by
-            #{ UrlGenerator.new(self).make_link(page.author.name, @web, nil, { :mode => :export }) }
+            #{ UrlGenerator.new(self).make_link(@web, page.author.name, @web, nil, { :mode => :export }) }
           </div>
         </body>
         </html>