RSS autodiscovery for wiki pages
Many wiki systems provide a link element for RSS autodiscovery in each wiki page. It is useful for those who want to track changes in wiki pages.
Redmine has an ability to provide such a RSS, however, Redmine's wiki pages don't have such link elements. The attached patch adds the link element in each wiki page. I have used this patch for redmine.ruby-lang.org and I hope you to merge the patch.